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

swagger/paths/application/conversation/update_last_seen.yml

@@ -3,6 +3,8 @@ post:
     - Conversations
   operationId: conversationUpdateLastSeen
   summary: Update Last Seen
+  security:
+    - userApiKey: []
   description: Updates the last seen of the conversation so that conversations will have the bubbles in the agents screen
   parameters:
     - name: id
@@ -11,9 +13,17 @@ post:
       description: ID of the conversation
       required: true
   responses:
-    200:
+    '200':
       description: Success
-    404:
-      description: Contact not found
-    403:
+    '403':
       description: Access denied
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/bad_request_error'
+    '404':
+      description: Contact not found
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/bad_request_error'