Bump docker/login-action from 3 to 4 (#76)

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -137,7 +137,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ github.actor }}