chore(deps): Bump xunit from 2.5.3 to 2.6.1 (#1578)

Bumps [xunit](https://github.com/xunit/xunit) from 2.5.3 to 2.6.1.
- [Commits](https://github.com/xunit/xunit/compare/2.5.3...2.6.1)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Projects/UOContent.Tests/UOContent.Tests.csproj

@@ -5,7 +5,7 @@
     </PropertyGroup>
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-        <PackageReference Include="xunit" Version="2.5.3" />
+        <PackageReference Include="xunit" Version="2.6.1" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
         <ProjectReference Include="..\Server\Server.csproj" />
         <ProjectReference Include="..\Server.Tests\Server.Tests.csproj" />