feat: Update swagger to openapi 3.0.4, update request payloads with examples (#11374)

swagger/paths/application/conversation/messages/delete.yml

@@ -2,11 +2,21 @@ tags:
   - Messages
 operationId: delete-a-message
 summary: Delete a message
+security:
+  - userApiKey: []
 description: Delete a message and it's attachments from the conversation.
 responses:
-  200:
+  '200':
     description: Success
-  401:
+  '401':
     description: Unauthorized
-  404:
+    content:
+      application/json:
+        schema:
+          $ref: '#/components/schemas/bad_request_error'
+  '404':
     description: The message or conversation does not exist in the account
+    content:
+      application/json:
+        schema:
+          $ref: '#/components/schemas/bad_request_error'