Add types-caldav dependency (#98265)

homeassistant/components/caldav/calendar.py

@@ -87,6 +87,7 @@ def setup_platform(
     calendars = client.principal().calendars()
 
     calendar_devices = []
+    device_id: str | None
     for calendar in list(calendars):
         # If a calendar name was given in the configuration,
         # ignore all the others

requirements_test.txt

@@ -36,6 +36,7 @@ tqdm==4.65.0
 types-atomicwrites==1.4.5.1
 types-croniter==1.0.6
 types-backports==0.1.3
+types-caldav==1.2.0.2
 types-chardet==0.1.5
 types-decorator==5.1.8.3
 types-enum34==1.1.8