Release checklist: v0.4.5

[github-actions]

This is a checklist to track the release of v0.4.5.

Core build (this repo):

• GitHub Release
• Android aar released on Maven Central
• Cocoapod released

SQLite + powersync bundles:

• react-native-quick-sqlite: Update core extension to 0.4.5 react-native-quick-sqlite#92
• wa-sqlite build: Update core extension to 0.4.5 wa-sqlite#46
• sql.js dev adapter: Update core extension to 0.4.5 powersync-sql-js#10

User-facing SDK updates:

• powersync.dart: Update core extension to 0.4.5 powersync.dart#324
• powersync-js: Update core extension to 0.4.5 powersync-js#702
• kotlin: Update core extension to 0.4.5 powersync-kotlin#254
• swift: Update core extension to 0.4.5 powersync-swift#73