title: On Upgrading Gradle for flutter(to 7.0.4) , I'm getting below issues
body: <p>A problem occurred configuring root project 'flutter_module'.</p>
  <blockquote>
  <p>Could not resolve all artifacts for configuration ':classpath'.
  Cannot resolve external dependency com.android.tools.build:gradle:7.0.4 because no repositories are defined.
  Required by:
  project :</p>
  </blockquote>
  <p>Possible solution:</p>
  <ul>
  <li>Declare repository providing the artifact, see the documentation at</li>
  </ul>