[DEPRECATION] `Grape::Validations::Base` is deprecated. Use `Grape::Validations::Validators::Base` instead.

https://log.gprd.gitlab.net/goto/318db0e0-0a8d-11ee-8afc-c9851e4645c0

1. Something happened to drastically increase the amount of items being logged, around 2023-06-12 1900. Are we at risk of flooding Kibana ?

2. Of course, we should address the deprecation warning itself.