chore: update docker/login-action action to v4

Author: renovate[bot]

.github/workflows/deploy.yml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ghcr.io
           username: ${{ github.actor }}