Fix a yarn.lock mismatch. (#14282)

Author: sean-mcmanus

Extension/yarn.lock

@@ -3036,7 +3036,7 @@ flat@^5.0.2:
   resolved "https://pkgs.dev.azure.com/azure-public/VisualCpp/_packaging/cpp_PublicPackages/npm/registry/flat/-/flat-5.0.2.tgz#8ca6fe332069ffa9d324c327198c598259ceb241"
   integrity sha1-jKb+MyBp/6nTJMMnGYxZglnOskE=
 
-flatted@^3.2.9, flatted@^3.4.0:
+flatted@^3.2.9, flatted@^3.4.1:
   version "3.4.1"
   resolved "https://pkgs.dev.azure.com/azure-public/VisualCpp/_packaging/cpp_PublicPackages/npm/registry/flatted/-/flatted-3.4.1.tgz#84ccd9579e76e9cc0d246c11d8be0beb019143e6"
   integrity sha1-hMzZV5526cwNJGwR2L4L6wGRQ+Y=