build: Updating mediawiki/mediawiki-codesniffer to 17.0.0

The following sniffs now pass and were enabled:
* MediaWiki.Commenting.FunctionComment.MissingParamComment

Change-Id: I73e702e62e602f962c2097a804d2b19e70784a8c

.phpcs.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0"?>
 <ruleset>
 	<rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki">
-		<exclude name="MediaWiki.Commenting.FunctionComment.MissingParamComment"/>
 		<exclude name="Squiz.Scope.MemberVarScope.Missing"/>
 		<exclude name="Squiz.Scope.MethodScope.Missing"/>
 	</rule>

composer.json

@@ -1,7 +1,7 @@
 {
 	"require-dev": {
 		"jakub-onderka/php-parallel-lint": "1.0.0",
-		"mediawiki/mediawiki-codesniffer": "16.0.1",
+		"mediawiki/mediawiki-codesniffer": "17.0.0",
 		"jakub-onderka/php-console-highlighter": "0.3.2",
 		"mediawiki/minus-x": "0.3.1"
 	},