Update phpmailer/phpmailer requirement from 6.9.2 to 6.9.3 in /lib (#7046)

* Update phpmailer/phpmailer requirement from 6.9.2 to 6.9.3 in /lib

Updates the requirements on [phpmailer/phpmailer](https://github.com/PHPMailer/PHPMailer) to permit the latest version.
- [Release notes](https://github.com/PHPMailer/PHPMailer/releases)
- [Changelog](https://github.com/PHPMailer/PHPMailer/blob/master/changelog.md)
- [Commits](https://github.com/PHPMailer/PHPMailer/compare/v6.9.2...v6.9.3)

---
updated-dependencies:
- dependency-name: phpmailer/phpmailer
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update phpmailer

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>

5 files changed, 19 insertions, 19 deletions

diff --git a/lib/composer.json b/lib/composer.json
index ef96db612..2d850a6ab 100644
--- a/lib/composer.json
+++ b/lib/composer.json
@@ -17,7 +17,7 @@
     "require": {
         "marienfressinaud/lib_opml": "0.5.1",
         "phpgt/cssxpath": "dev-master#45f3ac151fc21d459e2515c3aff97cd4bf877bf8",
-        "phpmailer/phpmailer": "6.9.2",
+        "phpmailer/phpmailer": "6.9.3",
         "simplepie/simplepie": "dev-freshrss#88f13f2df1ba17a7432a624d38884b1bd8f60e43"
     },
     "config": {
diff --git a/lib/phpmailer/phpmailer/README.md b/lib/phpmailer/phpmailer/README.md
index 8c2ec4543..07fe8c8ab 100644
--- a/lib/phpmailer/phpmailer/README.md
+++ b/lib/phpmailer/phpmailer/README.md
@@ -162,7 +162,7 @@ To reduce PHPMailer's deployed code footprint, examples are not included if you
 
 Complete generated API documentation is [available online](https://phpmailer.github.io/PHPMailer/).
 
-You can generate complete API-level documentation by running `phpdoc` in the top-level folder, and documentation will appear in the `docs` folder, though you'll need to have [PHPDocumentor](https://www.phpdoc.org) installed. You may find [the unit tests](https://github.com/PHPMailer/PHPMailer/blob/master/test/PHPMailerTest.php) a good reference for how to do various operations such as encryption.
+You can generate complete API-level documentation by running `phpdoc` in the top-level folder, and documentation will appear in the `docs` folder, though you'll need to have [PHPDocumentor](https://www.phpdoc.org) installed. You may find [the unit tests](https://github.com/PHPMailer/PHPMailer/blob/master/test/PHPMailer/PHPMailerTest.php) a good reference for how to do various operations such as encryption.
 
 If the documentation doesn't cover what you need, search the [many questions on Stack Overflow](https://stackoverflow.com/questions/tagged/phpmailer), and before you ask a question about "SMTP Error: Could not connect to SMTP host.", [read the troubleshooting guide](https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting).
 
diff --git a/lib/phpmailer/phpmailer/VERSION b/lib/phpmailer/phpmailer/VERSION
index 6b9255cf0..5f54f91ea 100644
--- a/lib/phpmailer/phpmailer/VERSION
+++ b/lib/phpmailer/phpmailer/VERSION
@@ -1 +1 @@
-6.9.2
+6.9.3
diff --git a/lib/phpmailer/phpmailer/src/PHPMailer.php b/lib/phpmailer/phpmailer/src/PHPMailer.php
index 12da10354..4a6077c01 100644
--- a/lib/phpmailer/phpmailer/src/PHPMailer.php
+++ b/lib/phpmailer/phpmailer/src/PHPMailer.php
@@ -253,7 +253,7 @@ class PHPMailer
      * You can set your own, but it must be in the format "<id@domain>",
      * as defined in RFC5322 section 3.6.4 or it will be ignored.
      *
-     * @see https://tools.ietf.org/html/rfc5322#section-3.6.4
+     * @see https://www.rfc-editor.org/rfc/rfc5322#section-3.6.4
      *
      * @var string
      */
@@ -387,7 +387,7 @@ class PHPMailer
      * 'DELAY'   will notify you if there is an unusual delay in delivery, but the actual
      *           delivery's outcome (success or failure) is not yet decided.
      *
-     * @see https://tools.ietf.org/html/rfc3461 See section 4.1 for more information about NOTIFY
+     * @see https://www.rfc-editor.org/rfc/rfc3461.html#section-4.1 for more information about NOTIFY
      */
     public $dsn = '';
 
@@ -756,7 +756,7 @@ class PHPMailer
      *
      * @var string
      */
-    const VERSION = '6.9.2';
+    const VERSION = '6.9.3';
 
     /**
      * Error severity: message only, continue processing.
@@ -1871,7 +1871,7 @@ class PHPMailer
      */
     protected static function isPermittedPath($path)
     {
-        //Matches scheme definition from https://tools.ietf.org/html/rfc3986#section-3.1
+        //Matches scheme definition from https://www.rfc-editor.org/rfc/rfc3986#section-3.1
         return !preg_match('#^[a-z][a-z\d+.-]*://#i', $path);
     }
 
@@ -2705,7 +2705,7 @@ class PHPMailer
         }
 
         //Only allow a custom message ID if it conforms to RFC 5322 section 3.6.4
-        //https://tools.ietf.org/html/rfc5322#section-3.6.4
+        //https://www.rfc-editor.org/rfc/rfc5322#section-3.6.4
         if (
             '' !== $this->MessageID &&
             preg_match(
@@ -4910,7 +4910,7 @@ class PHPMailer
      * Uses the 'relaxed' algorithm from RFC6376 section 3.4.2.
      * Canonicalized headers should *always* use CRLF, regardless of mailer setting.
      *
-     * @see https://tools.ietf.org/html/rfc6376#section-3.4.2
+     * @see https://www.rfc-editor.org/rfc/rfc6376#section-3.4.2
      *
      * @param string $signHeader Header
      *
@@ -4922,7 +4922,7 @@ class PHPMailer
         $signHeader = static::normalizeBreaks($signHeader, self::CRLF);
         //Unfold header lines
         //Note PCRE \s is too broad a definition of whitespace; RFC5322 defines it as `[ \t]`
-        //@see https://tools.ietf.org/html/rfc5322#section-2.2
+        //@see https://www.rfc-editor.org/rfc/rfc5322#section-2.2
         //That means this may break if you do something daft like put vertical tabs in your headers.
         $signHeader = preg_replace('/\r\n[ \t]+/', ' ', $signHeader);
         //Break headers out into an array
@@ -4954,7 +4954,7 @@ class PHPMailer
      * Uses the 'simple' algorithm from RFC6376 section 3.4.3.
      * Canonicalized bodies should *always* use CRLF, regardless of mailer setting.
      *
-     * @see https://tools.ietf.org/html/rfc6376#section-3.4.3
+     * @see https://www.rfc-editor.org/rfc/rfc6376#section-3.4.3
      *
      * @param string $body Message Body
      *
@@ -4990,7 +4990,7 @@ class PHPMailer
         $DKIMquery = 'dns/txt'; //Query method
         $DKIMtime = time();
         //Always sign these headers without being asked
-        //Recommended list from https://tools.ietf.org/html/rfc6376#section-5.4.1
+        //Recommended list from https://www.rfc-editor.org/rfc/rfc6376#section-5.4.1
         $autoSignHeaders = [
             'from',
             'to',
@@ -5096,7 +5096,7 @@ class PHPMailer
         }
         //The DKIM-Signature header is included in the signature *except for* the value of the `b` tag
         //which is appended after calculating the signature
-        //https://tools.ietf.org/html/rfc6376#section-3.5
+        //https://www.rfc-editor.org/rfc/rfc6376#section-3.5
         $dkimSignatureHeader = 'DKIM-Signature: v=1;' .
             ' d=' . $this->DKIM_domain . ';' .
             ' s=' . $this->DKIM_selector . ';' . static::$LE .
diff --git a/lib/phpmailer/phpmailer/src/SMTP.php b/lib/phpmailer/phpmailer/src/SMTP.php
index 5b238b527..b4eff4042 100644
--- a/lib/phpmailer/phpmailer/src/SMTP.php
+++ b/lib/phpmailer/phpmailer/src/SMTP.php
@@ -35,7 +35,7 @@ class SMTP
      *
      * @var string
      */
-    const VERSION = '6.9.2';
+    const VERSION = '6.9.3';
 
     /**
      * SMTP line break constant.
@@ -62,7 +62,7 @@ class SMTP
      * The maximum line length allowed by RFC 5321 section 4.5.3.1.6,
      * *excluding* a trailing CRLF break.
      *
-     * @see https://tools.ietf.org/html/rfc5321#section-4.5.3.1.6
+     * @see https://www.rfc-editor.org/rfc/rfc5321#section-4.5.3.1.6
      *
      * @var int
      */
@@ -72,7 +72,7 @@ class SMTP
      * The maximum line length allowed for replies in RFC 5321 section 4.5.3.1.5,
      * *including* a trailing CRLF line break.
      *
-     * @see https://tools.ietf.org/html/rfc5321#section-4.5.3.1.5
+     * @see https://www.rfc-editor.org/rfc/rfc5321#section-4.5.3.1.5
      *
      * @var int
      */
@@ -373,7 +373,7 @@ class SMTP
         }
         //Anything other than a 220 response means something went wrong
         //RFC 5321 says the server will wait for us to send a QUIT in response to a 554 error
-        //https://tools.ietf.org/html/rfc5321#section-3.1
+        //https://www.rfc-editor.org/rfc/rfc5321#section-3.1
         if ($responseCode === 554) {
             $this->quit();
         }
@@ -582,7 +582,7 @@ class SMTP
                 }
                 //Send encoded username and password
                 if (
-                    //Format from https://tools.ietf.org/html/rfc4616#section-2
+                    //Format from https://www.rfc-editor.org/rfc/rfc4616#section-2
                     //We skip the first field (it's forgery), so the string starts with a null byte
                     !$this->sendCommand(
                         'User & Password',
@@ -795,7 +795,7 @@ class SMTP
             //Send the lines to the server
             foreach ($lines_out as $line_out) {
                 //Dot-stuffing as per RFC5321 section 4.5.2
-                //https://tools.ietf.org/html/rfc5321#section-4.5.2
+                //https://www.rfc-editor.org/rfc/rfc5321#section-4.5.2
                 if (!empty($line_out) && $line_out[0] === '.') {
                     $line_out = '.' . $line_out;
                 }