add tests to canceled enrollment or scheduled with seat

enrollments-events/app/events/enroll.py

@@ -1,3 +1,5 @@
+from uuid import uuid4
+
 from aws_lambda_powertools import Logger
 from aws_lambda_powertools.utilities.data_classes import (
     EventBridgeEvent,
@@ -84,6 +86,7 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
 
 def _handler(course: Course, context: dict) -> Enrollment:
     enrollment = Enrollment(
+        id=uuid4(),
         user=context['user'],
         course=course,
     )