Vlad

Upgrade target sdk to 35

9

Most of the projects target 31 SDK, `twa-post-messages` targets 33. ~According to [Play Market requirements](https://developer.android.com/google/play/requirements/target-sdk), we missed a deadline this means that existing PWAs probably can't update and new one...

It's [deprecated](https://developer.android.com/build/jcenter-migration), need to migrate to `mavenCentral` or other repositories.