lint: various non-semantic fixes

bumping fail-under for pylint to 9.72

app/models/alarms.py

@@ -3,6 +3,7 @@ from datetime import datetime
 from typing import List, Any
 
 from app.extensions import db
+from app.models.activity import Activity
 
 
 class AlarmState(enum.Enum):
@@ -29,8 +30,6 @@ class Alarm(db.Model):  # type: ignore
         return [getattr(self, x) for x in self.csv_header()]
 
     def update_state(self, state: AlarmState, text: str) -> None:
-        from app.models.activity import Activity
-
         if self.alarm_state is None:
             self.alarm_state = AlarmState.UNKNOWN