fix(deps): update testing-library monorepo

Author: renovate[bot]

package.json

@@ -45,8 +45,8 @@
     "@edx/frontend-component-cookie-policy-banner": "2.2.0",
     "@edx/paragon": "^2",
     "@testing-library/jest-dom": "^6",
-    "@testing-library/react": "^12",
-    "@testing-library/user-event": "^12",
+    "@testing-library/react": "^16.0.0",
+    "@testing-library/user-event": "^14.0.0",
     "babel-loader": "^9",
     "babel-plugin-transform-class-properties": "^6",
     "babel-polyfill": "^6",