Update GitHub Actions to use latest Docker and Python setup actions

Author: rongxin-liu

.github/workflows/main.yml

@@ -14,12 +14,12 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.13"
 
       - name: Build for linux/amd64
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           build-args: |
             VCS_REF=${{ github.sha }}
@@ -52,12 +52,12 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: "3.13"
 
       - name: Build for linux/arm64
-        uses: docker/build-push-action@v5
+        uses: docker/build-push-action@v6
         with:
           build-args: |
             VCS_REF=${{ github.sha }}