chore(deps): update dependency verify.xunit to 30.20.1 (#310)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

src/Directory.Packages.props

@@ -40,7 +40,7 @@
     <PackageVersion Include="Microsoft.Reactive.Testing" Version="6.1.0" />
     <PackageVersion Include="PublicApiGenerator" Version="11.5.0" />
     <PackageVersion Include="coverlet.msbuild" Version="6.0.4" />
-    <PackageVersion Include="Verify.Xunit" Version="30.19.2" />
+    <PackageVersion Include="Verify.Xunit" Version="30.20.1" />
     <PackageVersion Include="Verify.SourceGenerators" Version="2.5.0" />
     <PackageVersion Include="ReactiveMarbles.SourceGenerator.TestNuGetHelper" Version="1.3.1" />
     <PackageVersion Include="Basic.Reference.Assemblies.Net80" Version="1.8.3" />