Merge pull request #292 from python-discord/renovate/docker-login-action-3.x

Update docker/login-action action to v3

Author: jb3

.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 }}