chore: Grant permissions to push a package to gh_pkgs

Author: hankei6km

.github/workflows/gh_pkg.yaml

@@ -10,6 +10,10 @@ jobs:
     runs-on: ubuntu-latest
     environment: gh_pkg
 
+    permissions:
+      contents: 'read'
+      packages: 'write'
+
     steps:
       - uses: actions/checkout@v3