CI: Check composer dependencies for known security issues

Author: alies-dev

.github/workflows/ci.yml

@@ -83,3 +83,14 @@ jobs:
 
       - name: Check .php files for syntax errors
         run: composer php:syntax -- --checkstyle | cs2pr
+
+      - uses: actions/cache@v3
+        id: cache-db
+        with:
+          path: ~/.symfony/cache
+          key: db
+
+      - name: Check composer dependencies for known security issues
+        uses: symfonycorp/security-checker-action@v3
+        with:
+          lock: ./composer.lock