Update github/workflows/composer.yaml

Co-authored-by: Ture Gjørup <[email protected]>

Author: rimi-itk

github/workflows/composer.yaml

@@ -49,3 +49,13 @@ jobs:
           docker network create frontend
           docker compose run --rm phpfpm composer install
           docker compose run --rm phpfpm composer normalize --dry-run
+
+  composer-audit:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+    steps:
+      - uses: actions/checkout@v4
+      - run: |
+          docker network create frontend
+          docker compose run --rm phpfpm composer audit