[client][managed] updated nuget packages
[client][managed][js] updated submodules esprima and Xamarin.Auth
Merge pull request #369 from hasankhan/nugetsdev

[client][managed] updated nuget packages
Merge pull request #370 from hasankhan/dev

[client][managed][js] updated submodules esprima and Xamarin.Auth
2132498 [client][managed] do not mutate user provided headers in InvokeApiAsync
Merge pull request #371 from hasankhan/headermutate

2132498 [client][managed] do not mutate user provided headers in InvokeApiAsync
Add changelog for 1.2.3