Bump NUnit3TestAdapter from 4.5.0 to 4.6.0 (PintaProject#933)

Bumps [NUnit3TestAdapter](https://github.com/nunit/nunit3-vs-adapter) from 4.5.0 to 4.6.0.
- [Release notes](https://github.com/nunit/nunit3-vs-adapter/releases)
- [Commits](nunit/nunit3-vs-adapter@V4.5.0...V4.6.0)

---
updated-dependencies:
- dependency-name: NUnit3TestAdapter
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Directory.Packages.props

@@ -19,6 +19,6 @@
  <PackageVersion Include="BenchmarkDotNet" Version="0.13.12" />
  <PackageVersion Include="NUnit" Version="4.1.0" />
  <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
- <PackageVersion Include="NUnit3TestAdapter" Version="4.5.0" />
+ <PackageVersion Include="NUnit3TestAdapter" Version="4.6.0" />
  </ItemGroup>
 </Project>