chore: use actions/checkout@v6

Author: bestmike007

.github/workflows/publish.yaml

@@ -18,7 +18,7 @@ jobs:
             name: aarch64
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Install Rust with Cross
         shell: bash
         run: |