Added git config for username and email

Author: timayabi2020

.azure-pipelines/weekly-examples-update.yml

@@ -78,6 +78,8 @@ jobs:
       targetType: inline
       pwsh: true
       script: |
+        git config --global user.email "[email protected]"
+        git config --global user.name "Microsoft Graph DevX Tooling"
         git status
         git add .
         git commit -m "Updating examples"