Update docker/login-action action to v4

Author: renovate[bot]

.github/workflows/docker.yml

@@ -22,14 +22,14 @@ jobs:
       - uses: docker/setup-buildx-action@v3
 
       # Login to DockerHub
-      - uses: docker/login-action@v3
+      - uses: docker/login-action@v4
         if: ${{ env.SHOULD_PUBLISH == 'true' }}
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       # Login to GHCR
-      - uses: docker/login-action@v3
+      - uses: docker/login-action@v4
         if: ${{ env.SHOULD_PUBLISH == 'true' }}
         with:
           registry: ghcr.io