Merge pull request 'Update docker/setup-buildx-action action to v4' (#5) from renovate/docker-setup-buildx-action-4.x into main

Reviewed-on: #5

.gitea/workflows/build-base.yml

@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4
 
       - name: Login to registry
         uses: docker/login-action@v3