Bump xunit from 2.9.0 to 2.9.1

Bumps [xunit](https://github.com/xunit/xunit) from 2.9.0 to 2.9.1.
- [Commits](xunit/xunit@2.9.0...2.9.1)

---
updated-dependencies:
- dependency-name: xunit
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Tests/GuiStracini.Mandae.Tests/GuiStracini.Mandae.Tests.csproj

@@ -20,7 +20,7 @@
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
     <PackageReference Include="JunitXml.TestLogger" Version="4.0.254" />
-    <PackageReference Include="xunit" Version="2.9.0" />
+    <PackageReference Include="xunit" Version="2.9.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>