try with tokem

.github/workflows/build_documentation.yml

@@ -72,7 +72,10 @@ jobs:
                 git config --global user.email 'github-actions@github.com'
                 git add .
                 git commit -m "Update Documentation"
+                git remote set-url origin https://x-access-token:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git
                 git push origin gh-pages 
+              env: 
+                GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}