core: don't delete expired tokens, rotate their key

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/core/tasks.py

@@ -26,14 +26,16 @@ def clean_expired_models(self: MonitoredTask):
     messages = []
     for cls in ExpiringModel.__subclasses__():
         cls: ExpiringModel
-        amount, _ = (
+        objects = (
             cls.objects.all()
             .exclude(expiring=False)
             .exclude(expiring=True, expires__gt=now())
-            .delete()
         )
-        LOGGER.debug("Deleted expired models", model=cls, amount=amount)
-        messages.append(f"Deleted {amount} expired {cls._meta.verbose_name_plural}")
+        for obj in objects:
+            obj.expire_action()
+        amount = objects.count()
+        LOGGER.debug("Expired models", model=cls, amount=amount)
+        messages.append(f"Expired {amount} {cls._meta.verbose_name_plural}")
     self.set_status(TaskResult(TaskResultStatus.SUCCESSFUL, messages))