Add explicit permissions to workflow for security

Co-authored-by: talyguryn <15259299+talyguryn@users.noreply.github.com>

Author: Copilot

.github/workflows/check-npm-token.yml

@@ -12,6 +12,8 @@ on:
 jobs:
   check-token:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
     steps:
       - uses: actions/checkout@v4