Potential fix for code scanning alert no. 2: Workflow does not contain permissions (#31)

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: adam-phntms

.github/workflows/npmpublish.yml

@@ -6,6 +6,9 @@ on:
 
 jobs:
   publish-npm:
+    permissions:
+      contents: read
+      packages: write
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2