Revert "composer.json: Update mediawki/mediawiki-phan-config"

This reverts commit c7765fb.

Author: reedy

composer.json

@@ -18,7 +18,7 @@
     "require-dev": {
         "ext-json": "*",
         "composer/composer": "^1.1||^2.0",
-        "mediawiki/mediawiki-phan-config": "0.12.0",
+        "mediawiki/mediawiki-phan-config": "0.11.1",
         "php-parallel-lint/php-parallel-lint": "~1.3.1",
         "phpspec/prophecy-phpunit": "~2.0.1",
         "phpunit/phpunit": "^9.5",