Release checklist: v0.4.7

This is a checklist to track the release of v0.4.7.

Core build (this repo):
* [x] GitHub Release
* [ ] Android aar released on Maven Central
* [x] Cocoapod released

SQLite + powersync bundles:
* [ ] react-native-quick-sqlite: 
* [ ] wa-sqlite build: 
* [ ] sql.js dev adapter: 

User-facing SDK updates:
* [ ] powersync.dart:
* [ ] powersync-js:
* [ ] kotlin:
* [ ] swift:
