ci: add id-token write permission for --provenance + drop GH Packages workflow

Author: ChesterHsu

.github/workflows/publish-npmjs.yml

@@ -18,6 +18,9 @@ on:
 jobs:
   publish:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write   # required by --provenance
     steps:
       - uses: actions/checkout@v4