Bump rxjava from 2.2.10 to 2.2.12 (#112)
Bump rxjava from 2.2.10 to 2.2.12 (#112)

Bumps [rxjava](https://github.com/ReactiveX/RxJava) from 2.2.10 to 2.2.12.
- [Release notes](https://github.com/ReactiveX/RxJava/releases)
- [Changelog](https://github.com/ReactiveX/RxJava/blob/v2.2.12/CHANGES.md)
- [Commits](https://github.com/ReactiveX/RxJava/compare/v2.2.10...v2.2.12)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
125m125/ktapi-java,125m125/ktapi-java