Question: Is reference to Newtonsoft.Json necessary?

[Sergey-Terekhin]

Hi!

Found that fresh versions of Minio client depend on the Newtonsoft.Json package. Is it necessary? Or it could be replaced by internal parser/serializer (for example, minimal. but working code can be taken here: https://github.com/zanders3/json/tree/master/src)? Seems that json is required only in some simple cases

My motivation is to reduce referenced packages as much as possible to reduce version conflicts and usage of potentially vulnerable dependencies.

I could make such PR if it was useful

Update: I've found in the class MinioNotificationRaw comment that Minio client doesn't depend on a JSON library