Fixes 9002 error caused by test fragment risk reset (related to EXPOSUREAPP-1851) (#1037)

* Resetting the preferences deletes our database encryption credentials, but we don't delete the database itself.
On app restart, there is a mismatch between the newly generated credentials and the old database.

* Include dependency 'androidx.annotation'.
The previous commit accidentally used the transitive dependency from google-utils.

Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>
Co-authored-by: Jakob Möller <jakob.moeller@sap.com>
Co-authored-by: harambasicluka <64483219+harambasicluka@users.noreply.github.com>