message: Update minimum supported Android version
diff: @@ -55,4 +55,4 @@ iTwin.js strives to support as many modern browsers as possible, though it requi
  The following minimum versions of mobile operating systems are supported:
  - iOS 13: Minimum supported [iPhones](https://support.apple.com/guide/iphone/supported-iphone-models-iphe3fa5df43/13.0/ios/13.0) and [iPads](https://support.apple.com/guide/ipad/supported-models-ipad213a25b2/13.0/ipados/13.0)
  -- Android 7.0 (API Level 24)
  +- Android 9.0 (API Level 28)
  