Change field name to deleted_at instead of updated_at

Author: VarshSuresh

descriptions/0/api.intercom.io.yaml

@@ -8616,11 +8616,11 @@ paths:
                     - type: conversation
                       id: '512'
                       metrics_retained: false
-                      updated_at: 1734537460
+                      deleted_at: 1734537460
                     - type: conversation
                       id: '513'
                       metrics_retained: true
-                      updated_at: 1734537400
+                      deleted_at: 1734537400
               schema:
                 "$ref": "#/components/schemas/deleted_conversation_list"
         '401':
@@ -18619,7 +18619,7 @@ components:
           type: boolean
           description: Whether reporting metrics are retained for this conversation ID
           example: true
-        updated_at:
+        deleted_at:
           type: integer
           format: date-time
           description: The time when the conversation was deleted.