Update docker/login-action action to v4 (#9)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/docker-publish.yaml

@@ -45,7 +45,7 @@ jobs:
 
       # Login Action https://github.com/docker/login-action
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ${{ env.GH_REGISTRY }}
           username: ${{ github.repository_owner }}