fix(test): MariaDB 11 upgrade, query result order

Fix order of recipients for "FlagNotification" test.
Apply sorting to the recipients query.
(only relevant for tests, but who knows when they change things again)

MariaDB 11 includes some changes related to the
query optimizer. Turns out that this might have effects
on how records are ordered for certain queries.
(in case no ORDER BY clause was specified)

https://mariadb.com/kb/en/mariadb-11-0-0-release-notes/
Signed-off-by: moson <moson@archlinux.org>

aurweb/scripts/notify.py

@@ -334,6 +334,7 @@ class FlagNotification(Notification):
             .filter(and_(PackageBase.ID == pkgbase_id, User.Suspended == 0))
             .with_entities(User.Email, User.LangPreference)
             .distinct()
+            .order_by(User.Email)
         )
         self._recipients = [(u.Email, u.LangPreference) for u in query]