Update dependency NUnit3TestAdapter to v6 (#597)

Co-authored-by: dependencyupdates[bot] <218638057+dependencyupdates[bot]@users.noreply.github.com>

Author: dependencyupdates[bot]

src/Tests/Tests.csproj

@@ -9,7 +9,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageReference Include="NUnit" Version="4.4.0" />
     <PackageReference Include="NUnit.Analyzers" Version="4.11.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="5.2.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="6.0.1" />
     <PackageReference Include="Particular.Approvals" Version="2.0.1" />
     <PackageReference Include="SimpleExec" Version="12.0.0" />
   </ItemGroup>