Update docker/login-action action to v3 (#6)

.github/workflows/docker.yml

@@ -23,7 +23,7 @@ jobs:
         uses: docker/setup-buildx-action@v2
       -
         name: Login to DockerHub
-        uses: docker/login-action@v1
+        uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}