Adapters: Update to use jsonutil unmarshal

[bsardo]

No description provided.

[linux019]

Why not use https://github.com/bytedance/sonic ? It's a fastest json lib with JIT (de)serializer

[bsardo]

Why not use https://github.com/bytedance/sonic ? It's a fastest json lib with JIT (de)serializer

Hi @linux019. This question came up earlier this year. Here is the explanation pulled from the linked issue comment:

We recently switched from "encoding/json" to "json-iterator/go" after reviewing alternative options. We dismissed the "mailru/easyjson" library because its no longer maintained and has as pre-build step. Though, I think the community would support a pre-build steps for a significant performance gain.

While many projects claim to be compatible as a drop-in replacement for "encoding/json", in reality none are. We choose "json-iterator/go" because it was the closest and required the least amount of modification for a 2-3x performance gain. There were other libraries we evaluated which encode faster and use less allocations such as "goccy/go-json", but those failed in specific edge cases covered by Prebid Server tests.

As part of replacing the json library, we created new utility methods in "util/jsonutil" to centralize the library call. This will make it easier for you, or others, to try different libraries.

[hhhjort]

LGTM