(maint) Update dependency xunit to v2.6.5

Author: renovate[bot]

src/JavaVersionSwitcher.Tests/JavaVersionSwitcher.Tests.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="Shouldly" Version="4.2.1" />
     <PackageReference Include="Spectre.Console.Registrars.SimpleInjector" Version="0.5.0" />
     <PackageReference Include="Spectre.Console.Testing" Version="0.48.0" />
-    <PackageReference Include="xunit" Version="2.6.4" />
+    <PackageReference Include="xunit" Version="2.6.5" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>