Use correct path to mesh (#1155)

.github/workflows/update_protobufs.yml

@@ -31,5 +31,5 @@ jobs:
           git config --global user.email 'bot@noreply.github.com'
           git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}
           git add proto
-          git add mesh
+          git add src/mesh
           git commit -m "Update protobuf submodule" && git push || echo "No changes to commit"