Changes to GET /v3/serp/google/news/tasks_fixed

api operation id SerpGoogleNewsTasksFixed removed and replaced with GoogleNewsTasksFixed

api operation id GoogleNewsTasksFixed removed and replaced with SerpGoogleNewsTasksFixed

removed the optional property oneOf[#/components/schemas/SerpGoogleNewsTasksFixedResponseInfo]/allOf[subschema #2]/tasks/items/oneOf[#/components/schemas/SerpGoogleNewsTasksFixedTaskInfo]/allOf[subschema #2]/result/items/oneOf[#/components/schemas/SerpGoogleNewsTasksFixedResultInfo]/date_fixed from the response with the 200 status

added the optional property oneOf[#/components/schemas/SerpGoogleNewsTasksFixedResponseInfo]/allOf[subschema #2]/tasks/items/oneOf[#/components/schemas/SerpGoogleNewsTasksFixedTaskInfo]/allOf[subschema #2]/result/items/oneOf[#/components/schemas/SerpGoogleNewsTasksFixedResultInfo]/date_posted to the response with the 200 status