Upgrade AssetRipper.Primitives to avoid implying Json 8.0.1

[decaprime]

Description

Downgrading AssetRipper.Primitives from 2.1.1 to 2.1.0 to avoid implying System.Text.Json 8.0.1 during build using current BE feed.

Motivation and Context

This recent change to support V Rising included AssetRipper.Primitives 2.1.1 that change implies System.Net.Json 8.0.1 . This causes a NU1605 build warning as error when referencing BE690 nugets. We know that .net 6 is available at runtime, so it is possible to ignore the warning. This change removes the need to ignore that warning.

How Has This Been Tested?

I built BepInEx locally, used it for V Rising server and referenced in two plugins: I built a test plugin and updated a large existing plugin. They built without the warning and functioned in game. To test end to end I built a small test command that echos JSON.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[ds5678]

https://github.com/AssetRipper/AssetRipper.Primitives/releases/tag/3.1.1

[decaprime]

Thanks @ds5678, so I've changed this PR to an upgrade instead @Kasuromi.