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

.gitea/workflows/build_blog_image.yml

@@ -23,7 +23,7 @@ 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: Login to Docker registry
         uses: docker/login-action@v3
         with:
@@ -31,7 +31,7 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GIT_TOKEN }}
       - name: Build and push
-        uses: docker/build-push-action@v7
+        uses: docker/build-push-action@v6
         with:
           context: .
           file: ./Dockerfile