Update docker/login-action action to v3

| datasource  | package             | from | to |
| ----------- | ------------------- | ---- | -- |
| github-tags | docker/login-action | v1   | v3 |

Author: renovate[bot]

Diff for: .github/workflows/forms-backend.yml

@@ -71,7 +71,7 @@ jobs:
         uses: docker/setup-buildx-action@v1
 
       - name: Login to Github Container Registry
-        uses: docker/login-action@v1
+        uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}