Fix CI on push event (#78)

Author: yoanm

.github/workflows/CI.yml

@@ -161,6 +161,7 @@ jobs:
         uses: docker://webfactory/composer-require-checker:3.2.0
 
       - name: Dependencies check
+        if: ${{ github.event_name == 'pull_request' }}
         uses: actions/dependency-review-action@v1
 
   finalize-codacy-coverage-report: