chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/pkg.pr.new.yml

@@ -7,7 +7,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - run: corepack enable
       - uses: actions/setup-node@v4