chore(deps): bump shared_preferences in /packages/app

Bumps [shared_preferences](https://github.com/flutter/packages/tree/main/packages/shared_preferences) from 2.1.2 to 2.2.0.
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/shared_preferences-v2.2.0/packages/shared_preferences)

---
updated-dependencies:
- dependency-name: shared_preferences
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

packages/app/pubspec.yaml

@@ -31,7 +31,7 @@ dependencies:
     git:
       url: https://github.com/nextcloud/neon
       path: packages/neon/neon_notifications
-  shared_preferences: ^2.1.1
+  shared_preferences: ^2.2.0
 
 dev_dependencies:
   flutter_test: