Implement the endpoint for updating set entry by id

Implement the endpoint which accepts set id and set json entry and then updates with it the set entry into databse.
Request url /set/

{set_id}
Request method: PUT
Request example: { "id" : "8772b95a-a006-419d-a367-3bd8e36918df", "name" : "1", "description" : "", "setSpec" : "", "createdDate" : "2020-06-24T08:05:24.129+0000", "createdByUserId" : "efa0ceef-32b9-409c-a6c5-2f74c62f6cf8", "updatedDate" : "2020-06-24T08:05:24.129+0000", "updatedByUserId" : "efa0ceef-32b9-409c-a6c5-2f74c62f6cf8" }

acceptance criteria:
- when PUT by id and item with specified id exists then response with updated item is returned with status code 204
- when PUT by id and item with such id does not exist then 404 error returned with error message "Set with id '{set_id}

' was not found"