Set github account's identity in workflow

Author: steppi

.github/workflows/auto-translations-pr.yml

@@ -32,6 +32,8 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
+          git config --global user.email "[email protected]"
+          git config --global user.name "GitHub Actions"
           branch_name=$(../automations/scripts/create_branch_for_language.sh origin main l10n_main ${{ github.event.inputs.language_code }})
           echo "BRANCH_NAME=$branch_name" >> $GITHUB_ENV
         working-directory: ./numpy.org