Update docker/login-action action to v4

Author: renovate[bot]

.github/workflows/docker.yml

@@ -30,7 +30,7 @@ jobs:
 
       - name: Login to Docker Hub
         if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}