build: Updating mediawiki/mediawiki-codesniffer to 18.0.0

The following sniffs now pass and were enabled:
* MediaWiki.Commenting.LicenseComment.InvalidLicenseTag

Change-Id: I6d9d49895a44890710017d55401618735f43337e

.phpcs.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0"?>
 <ruleset name="MediaWiki">
 	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki">
-		<exclude name="MediaWiki.Commenting.LicenseComment.InvalidLicenseTag" />
 	</rule>
 	<file>.</file>
 </ruleset>

Description2.php

@@ -6,7 +6,7 @@
  * @ingroup Extensions
  * @author Daniel Friesen (http://danf.ca/mw/)
  * @copyright Copyright 2010 – Daniel Friesen
- * @license https://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
+ * @license GPL-2.0-or-later
  * @link https://www.mediawiki.org/wiki/Extension:Description2 Documentation
  */
 

composer.json

@@ -3,7 +3,7 @@
 		"jakub-onderka/php-parallel-lint": "1.0.0",
 		"jakub-onderka/php-console-highlighter": "0.3.2",
 		"mediawiki/minus-x": "0.3.1",
-		"mediawiki/mediawiki-codesniffer": "17.0.0"
+		"mediawiki/mediawiki-codesniffer": "18.0.0"
 	},
 	"scripts": {
 		"test": [

includes/Description2.php

@@ -15,7 +15,7 @@ use PPFrame;
  * @ingroup Extensions
  * @author Daniel Friesen (http://danf.ca/mw/)
  * @copyright Copyright 2010 – Daniel Friesen
- * @license https://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
+ * @license GPL-2.0-or-later
  * @link https://www.mediawiki.org/wiki/Extension:Description2 Documentation
  */