Update mediawiki/mediawiki-codesniffer requirement from 39.0.0 to 44.0.0

Updates the requirements on [mediawiki/mediawiki-codesniffer](https://github.com/wikimedia/mediawiki-tools-codesniffer) to permit the latest version.
- [Changelog](https://github.com/wikimedia/mediawiki-tools-codesniffer/blob/master/HISTORY.md)
- [Commits](wikimedia/mediawiki-tools-codesniffer@v39.0.0...v44.0.0)

---
updated-dependencies:
- dependency-name: mediawiki/mediawiki-codesniffer
  dependency-type: direct:development
...

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

Author: dependabot[bot]

Diff for: composer.json

@@ -25,7 +25,7 @@
     "composer/installers": "1.*,>=1.0.1"
   },
   "require-dev": {
-    "mediawiki/mediawiki-codesniffer": "39.0.0",
+    "mediawiki/mediawiki-codesniffer": "44.0.0",
     "mediawiki/minus-x": "1.1.3",
     "php-parallel-lint/php-console-highlighter": "1.0.0",
     "php-parallel-lint/php-parallel-lint": "1.4.0",