Update docker/setup-buildx-action action to v4

.gitea/workflows/publish.yaml

@@ -14,7 +14,7 @@ jobs:
         with:
           bun-version: "1.4"
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
       - name: Login to Container Registry
         uses: docker/login-action@v3
         with:

.gitea/workflows/test-build.yaml

@@ -16,7 +16,7 @@ jobs:
         with:
           node-version: "24"
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v4
 
       - name: Checkout
         uses: actions/checkout@v6