PUT endpoints doesn't update the user_id properly for the modified user ID field

[BenJeau]

Describe the bug
When updating ignore list, linked sources, linked providers, ... (most if not all PUT requests) should probably be a PATCH endpoint with proper diffing of the current status and requested change.

Currently it will update the related modified user to be the one from the request for all the rows related to it even if the user only updated a subset of the rows.