Update IdentityModel submodule to preview2

[jennyf19]

No description provided.

[mthalman]

@jennyf19 - Looks like this causes a prebuilt for Newtonsoft.Json.13.0.3. This version of that package needs to be added to https://github.com/dotnet/source-build-reference-packages. You can follow the instructions in the README there for how to do that. Once the PR for that gets merged, it will produce a new version of the SBRP package that will get merged into this repo. Once that happens, we can incorporate that change into this PR and we should be good.

[MichaelSimons]

@jennyf19 - Looks like this causes a prebuilt for Newtonsoft.Json.13.0.3. This version of that package needs to be added to https://github.com/dotnet/source-build-reference-packages. You can follow the instructions in the README there for how to do that. Once the PR for that gets merged, it will produce a new version of the SBRP package that will get merged into this repo. Once that happens, we can incorporate that change into this PR and we should be good.

I think a better solution is to upgrade the version we are source-building to be 13.0.3. There appear to be several repo on this version already (razor, fsharp, roslyn, etc). We are source-build 13.0.1. This repo resides in https://github.com/dotnet/source-build-externals but the upgrade should be done in a stand-alone PR.

[mthalman]

I think a better solution is to upgrade the version we are source-building to be 13.0.3.

I'll take care of that.

[jennyf19]

closing as we cannot ship w/this dependency. We will open another one once we have newtonsoft completely removed. Thanks for your help today @mthalman

[MichaelSimons]

closing as we cannot ship w/this dependency. We will open another one once we have newtonsoft completely removed.

@jennyf19 - what is the backstory here? I'm curious why this dependency can't be shipped.