chore(deps): update docker/setup-buildx-action action to v4

.gitea/workflows/build-docker-image.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v5
@@ -46,7 +46,7 @@ jobs:
           username: ${{ secrets.registry-user }}
           password: ${{ secrets.registry-password }}
       - name: Build and push
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@v6
         with:
           context: .
           platforms: linux/amd64,linux/arm64