fix: add github workspace to git safe directory

Author: rubenfonseca

.github/workflows/build.yml

@@ -68,6 +68,8 @@ jobs:
           token: ${{ secrets.PROJEN_GITHUB_TOKEN }}
           ref: ${{ github.event.pull_request.head.ref }}
           repository: ${{ github.event.pull_request.head.repo.full_name }}
+      - name: Add repository to git safe directories
+        run: git config --global --add safe.directory $GITHUB_WORKSPACE
       - name: Download patch
         uses: actions/download-artifact@v3
         with: