chore(deps): update dependency tunit to 1.8.9

Author: renovate[bot]

Directory.Packages.props

@@ -15,6 +15,6 @@
   <ItemGroup>
     <PackageVersion Include="NetEvolve.Arguments" Version="3.0.0" />
     <PackageVersion Include="NetEvolve.Extensions.TUnit" Version="3.4.0" />
-    <PackageVersion Include="TUnit" Version="1.8.1" />
+    <PackageVersion Include="TUnit" Version="1.8.9" />
   </ItemGroup>
 </Project>