feat: add Fastlane Google Play upload and fix onboarding re-renders

- Add Fastlane setup for uploading AAB to Google Play
- Chain upload into release:android npm script
- Fix onboarding re-renders from authStore subscriptions
- Reduce unnecessary authStore state updates in fetchUser
- Bump Android versionCode to 45

apps/mobile/app.json

@@ -183,7 +183,7 @@
         "backgroundColor": "#1a1a2e"
       },
       "package": "com.sauci.app",
-      "versionCode": 44,
+      "versionCode": 45,
       "googleServicesFile": "./google-services.json",
       "permissions": [
         "RECEIVE_BOOT_COMPLETED",