Merge pull request #35 from patchlevel/renovate/docker-login-action-4.x

Update docker/login-action action to v4

Author: DanielBadura

.github/workflows/ci.yaml

@@ -47,7 +47,7 @@ jobs:
 
       - name: Login to GitHub Container Registry
         if: ${{ github.ref_name == 'main' }}
-        uses: docker/login-action@v3
+        uses: docker/login-action@v4
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.actor }}
@@ -128,7 +128,7 @@ 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: ${{ env.REGISTRY }}
           username: ${{ github.actor }}