fix: align matrix config checkout ref to main branch

Author: berfinyuksel

.github/workflows/new-static-analysis.yaml

@@ -46,7 +46,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           repository: pimcore/workflows-collection-public
-          ref: reusable-workflows
+          ref: main
           path: reusable-workflows
 
       - name: Parse PHP versions from composer.json