poller/interfaces: fixed linting

Signed-off-by: AndryNick98 <[email protected]>

suzieq/poller/worker/services/interfaces.py

@@ -2,6 +2,7 @@
 from datetime import datetime
 from collections import defaultdict
 from json import loads
+from typing import Dict
 import numpy as np
 
 from suzieq.poller.worker.services.service import Service