Update radicale build steps

.forgejo/workflows/radicale-docker.yml

@@ -15,25 +15,28 @@ jobs:
     runs-on: docker
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v4
+        uses: https://forge.niblock.tech/actions/checkout@v4
         with:
           repository: https://forge.niblock.tech/oss/radicale
-      
+
       - name: Login to the GitHub Container Registry
-        uses: actions/docker-login-action@v3
+        uses: https://forge.niblock.tech/actions/docker-login-action@v3
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ env.REGISTRY_USERNAME }}
           password: ${{ env.REGISTRY_PASSWORD }}
-      
+
       - name: Extract repository metadata (tags, labels)
         id: meta
-        uses: actions/docker-metadata-action@v5
+        uses: https://forge.niblock.tech/actions/docker-metadata-action@v5
         with:
-          images: ${{ env.REGISTRY }}/${{ env.REGISTRY_IMAGE_NAME }}       
-      
+          images: ${{ env.REGISTRY }}/${{ env.REGISTRY_IMAGE_NAME }}
+
+      - name: Setup Docker Buildx
+        uses: https://forge.niblock.tech/actions/setup-buildx-action@v3
+
       - name: Build and publish latest
-        uses: actions/docker-build-push-action@v5
+        uses: https://forge.niblock.tech/actions/docker-build-push-action@v6
         with:
           context: .
           push: true