Add content write permission to ghpage workflow

Change-Id: I13a10316400dd80a8149e6e8a265c13a51aee652

Author: awesome-manuel

.github/workflows/edge_ghpage.yml

@@ -5,6 +5,8 @@ on:
     branches:
       - main
       - master
+permissions:
+  contents: write
 jobs:
   build-and-deploy:
     runs-on: ubuntu-latest