Prepare for release 2.31.0.

Author: ychescale9

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Change Log
 
+## v2.31.0
+
+* Support setting `VanillaIceCream` as `api-level`. - [#378](https://github.com/ReactiveCircus/android-emulator-runner/pull/378)
+* Install `platforms` for the specified `api-level`. - [#384](https://github.com/ReactiveCircus/android-emulator-runner/pull/384)
+
 ## v2.30.1
 
 * Run action on Node 20. - [#371](https://github.com/ReactiveCircus/android-emulator-runner/pull/371)