⬆️ Upgrade docker/login-action action to v4

Author: renovate[bot]

.github/workflows/docker.yaml

@@ -21,7 +21,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Log in to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ github.actor }}