Bump NUnit3TestAdapter from 4.2.0 to 4.2.1

Bumps [NUnit3TestAdapter](https://github.com/nunit/nunit3-vs-adapter) from 4.2.0 to 4.2.1.
- [Release notes](https://github.com/nunit/nunit3-vs-adapter/releases)
- [Commits](nunit/nunit3-vs-adapter@V4.2.0...V4.2.1)

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

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

Author: dependabot[bot]

ReflectionAnalyzers.Tests/ReflectionAnalyzers.Tests.csproj

@@ -32,7 +32,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" PrivateAssets="all" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.0.1" PrivateAssets="all" />
     <PackageReference Include="NUnit" Version="3.13.2" PrivateAssets="all" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.2.0" PrivateAssets="all" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1" PrivateAssets="all" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.2.0-beta.376" PrivateAssets="all" />
   </ItemGroup>
 </Project>