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

swagger/paths/application/custom_attributes/delete.yml

@@ -6,16 +6,25 @@ description: Remove a custom attribute from account
 security:
   - userApiKey: []
 parameters:
-  - $ref: '#/parameters/account_id'
+  - $ref: '#/components/parameters/account_id'
   - in: path
     name: id
-    type: integer
+    schema:
+      type: integer
     required: true
     description: The ID of the custom attribute to be deleted
 responses:
-  200:
+  '200':
     description: Success
-  404:
+  '404':
     description: Custom attribute not found
-  403:
+    content:
+      application/json:
+        schema:
+          $ref: '#/components/schemas/bad_request_error'
+  '403':
     description: Access denied
+    content:
+      application/json:
+        schema:
+          $ref: '#/components/schemas/bad_request_error'