[BUGFIX] Run composer install in CI

Author: eliashaeussler

.github/workflows/cgl.yaml

@@ -36,7 +36,7 @@ jobs:
       - name: Reset composer.json
         run: |
           git checkout composer.json
-          composer update --no-progress
+          composer install --no-progress
       - name: Check for unused dependencies
         run: composer-unused