build: Updating mediawiki/mediawiki-codesniffer to 20.0.0

Change-Id: I02db015a34f67a8b268feead090d2f6be5658935

composer.json

@@ -26,7 +26,7 @@
 	},
 	"require-dev": {
 		"jakub-onderka/php-parallel-lint": "1.0.0",
-		"mediawiki/mediawiki-codesniffer": "18.0.0",
+		"mediawiki/mediawiki-codesniffer": "20.0.0",
 		"jakub-onderka/php-console-highlighter": "0.3.2",
 		"mediawiki/minus-x": "0.3.1"
 	},

data/LanguageNameSearch.php

@@ -34,7 +34,7 @@ class LanguageNameSearch {
 	 *
 	 * @param string $searchKey
 	 * @param int $typos
-	 * @param string $userLanguage Language tag.
+	 * @param string|null $userLanguage Language tag.
 	 * @return array
 	 */
 	public static function search( $searchKey, $typos = 0, $userLanguage = null ) {

includes/ResourceLoaderULSJsonMessageModule.php

@@ -14,7 +14,7 @@ class ResourceLoaderULSJsonMessageModule extends ResourceLoaderModule {
 	/**
 	 * Part of the ResourceLoader module interface.
 	 * Declares the core ext.uls.i18n module as a dependency.
-	 * @param ResourceLoaderContext $context
+	 * @param ResourceLoaderContext|null $context
 	 * @return string[] Module names.
 	 */
 	public function getDependencies( ResourceLoaderContext $context = null ) {