Hi there! Guileless Bopomofo 4.0.6 is a maintenance release that refreshes the build toolchain and dependencies.

* Upgraded to Android compile/target SDK 37.
* Upgraded the Android Gradle Plugin to 9.2.1 and the Gradle Wrapper to 9.4.1.
* Bumped Kotlin, kotlinx-coroutines, Material Components, AndroidX core-ktx, and Mockito to their latest versions.
* Updated the bundled libchewing engine.

Thanks for using Guileless Bopomofo!
