change typ name form list to List to actual use the type

dashboards/variables.py

 from grafanalib.core import Template
 from collections import namedtuple
 from dashboards.influx_queries import show_tag_values, get_tag_values, show_field_keys
+from typing import List
 
 Filter = namedtuple(
     "Filter", ("name", "multi", "default_value"), defaults=("", True, "")
@@ -34,12 +35,12 @@ def get_time_dependend_dashboard_variable(
     *,
     inner_field_key: str = "",
     where: str = "",
-    group_by: list[str] = None
+    group_by: List[str] = None
 ):
     query = get_tag_values(
         measurment_name,
         filter.name,
-        inner_field_key=inner_field_key, 
+        inner_field_key=inner_field_key,
         where=where,
         group_by=group_by
     )