title: How to upgrade app signature from V1 to V2?
body: <p>I have a ionic-3 app signed with V1 signature (jar signed) and its published at Google store. Now, starting August 2021, new apps will be required to target API level 30 (Android 11).</p>
  <p>So, I changed the API level to 30 and signed with V1 signature, but Google did not accepted the APK.</p>
  <p>What is the standard way to upgrade the app signature from V1 to V2?</p>