nuget: bump Microsoft.NET.Test.Sdk from 17.9.0 to 17.12.0

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 17.9.0 to 17.12.0.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md)
- [Commits](https://github.com/microsoft/vstest/compare/v17.9.0...v17.12.0)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Directory.Packages.props

@@ -21,16 +21,16 @@
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.9.2" />
     <PackageVersion Include="Microsoft.IdentityModel.JsonWebTokens" Version="8.1.2" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageVersion Include="Microsoft.IO.RecyclableMemoryStream" Version="3.0.1" />
     <PackageVersion Include="MsgPack.Cli" Version="1.0.1" />
     <PackageVersion Include="NetCoreServer" Version="8.0.7" />
     <PackageVersion Include="NUnit" Version="3.13.3" />
     <PackageVersion Include="NUnit3TestAdapter" Version="4.1.0" />
-    <PackageVersion Include="OpenTK.Core" Version="4.9.3" />
-    <PackageVersion Include="OpenTK.Graphics" Version="4.9.2" />
-    <PackageVersion Include="OpenTK.Audio.OpenAL" Version="4.9.3" />
-    <PackageVersion Include="OpenTK.Windowing.GraphicsLibraryFramework" Version="4.9.2" />
+    <PackageVersion Include="OpenTK.Core" Version="4.8.2" />
+    <PackageVersion Include="OpenTK.Graphics" Version="4.8.2" />
+    <PackageVersion Include="OpenTK.Audio.OpenAL" Version="4.8.2" />
+    <PackageVersion Include="OpenTK.Windowing.GraphicsLibraryFramework" Version="4.8.2" />
     <PackageVersion Include="Ryujinx.Audio.OpenAL.Dependencies" Version="1.21.0.1" />
     <PackageVersion Include="Ryujinx.Graphics.Nvdec.Dependencies" Version="5.0.3-build14" />
     <PackageVersion Include="Ryujinx.Graphics.Vulkan.Dependencies.MoltenVK" Version="1.2.0" />