Fix: Make swagger doc compliant to OpenAPI (#3394)

This fixes issues in the swagger.json file. The motivation to do so is to be able to generate API clients using https://openapi-generator.tech Doing so will require further changes to the api spec, but this seems like a good first step since it is now "valid" according to editor.swagger.io and openapi-generator validate.

Fixes #2806

swagger/paths/application/conversation/toggle_status.yml

@@ -12,11 +12,12 @@ parameters:
     required: true
     schema:
       type: object
+      required:
+        - status
       properties:
         status:
           type: string
           enum: ["open", "resolved", "pending"]
-          required: true
           description: The status of the conversation
 responses:
   200: