phpstan only needs to react to relevant changes

.gitlab-ci.yml

@@ -237,10 +237,9 @@ phpstan:
   needs: [build-composer]
   rules:
     changes:
-      - app/controllers/**/*.php
-      - lib/**/*.php
-      - tests/**/*.php
-
+      - "app/controllers/**/*.php"
+      - "lib/**/*.php"
+      - "tests/**/*.php"
   variables:
     CACHE_LOCATION: $CACHE_DIR/phpstan
     PHPSTAN_CODE_QUALITY_REPORT: $REPORT_DIR/phpstan-codequality.json