analytics: remove updated_at

Author: denchenko

analytics.asyncapi.yaml

@@ -374,10 +374,6 @@ components:
             type: string
             format: date-time
             description: When the insight was created
-          updated_at:
-            type: string
-            format: date-time
-            description: When the insight was updated
           metadata:
             $ref: '#/components/schemas/Metadata'
         required:
@@ -388,7 +384,6 @@ components:
           - description
           - severity
           - created_at
-          - updated_at
 
     AnalyticsAlert:
       name: AnalyticsAlert