ci: add workaround for snapshot change commits failing

.github/workflows/update visual snapshots.yml

@@ -19,6 +19,11 @@ jobs:
           # Support runs of this action in forks
           repository: ${{ github.event.pull_request.head.repo.full_name }}
 
+      - name: Fix repository permission issue
+        # Workaround for upstream issue: https://github.com/actions/checkout/issues/1169
+        run: |
+          git config --system --add safe.directory $GITHUB_WORKSPACE
+
       - name: Prepare for build
         run: apt-get update && apt-get install -y -q gcc make unzip