Use PHP 8.5 for PHPStan checks in CI

Author: OskarStark

.github/workflows/code-quality.yaml

@@ -21,7 +21,7 @@ jobs:
         strategy:
             fail-fast: false
             matrix:
-                php-version: [ '8.4' ]
+                php-version: [ '8.5' ]
         steps:
             - name: Checkout
               uses: actions/checkout@v6