Update dependency NUnit3TestAdapter to v5

Author: renovate[bot]

SIL.NuGetCleaner.Tests/SIL.NuGetCleaner.Tests.csproj

@@ -11,7 +11,7 @@
   <ItemGroup>
     <PackageReference Include="NuGet.Versioning" Version="6.13.1" />
     <PackageReference Include="nunit" Version="4.3.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="5.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
     <PackageReference Include="RichardSzalay.MockHttp" Version="7.0.0" />
   </ItemGroup>