Upgrade to targetSdkVersion 34

[mitchdowney]

I'm not sure what implications this upgrade will have...I will probably just release it into Beta and see what happens.

com.google.android.play:core has added this note for core:1.9.0:

Update your Play Core Maven dependency to an Android 14 compatible version! Your current Play Core library is incompatible with targetSdkVersion 34 (Android 14), which introduces a backwards-incompatible change to broadcast receivers to improve user security. As a reminder, from August 31, Google Play requires all new app releases to target Android 14. Update to the latest Play Core library version dependency to avoid app crashes: https://developer.android.com/guide/playcore#playcore-migration

You may not be able to release future versions of your app with this SDK version to production or open testing.

Affected app bundles and APKs:

version: 5267 (4.16.3), release: 4.16.3
version: 5267 (4.16.3), release: 4.16.3
version: 5267 (4.16.3), release: 4.16.3
If you have questions about this SDK, contact the SDK provider.