Bump xunit from 2.6.4 to 2.6.6

Bumps [xunit](https://github.com/xunit/xunit) from 2.6.4 to 2.6.6.
- [Commits](xunit/xunit@2.6.4...2.6.6)

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

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

Dysnomia.Common.SteamWebAPI.Test/Dysnomia.Common.SteamWebAPI.Test.csproj

@@ -13,7 +13,7 @@
 		<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="8.0.0" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-		<PackageReference Include="xunit" Version="2.6.4" />
+		<PackageReference Include="xunit" Version="2.6.6" />
 		<PackageReference Include="Xunit.DependencyInjection" Version="8.9.1" />
 		<PackageReference Include="xunit.runner.visualstudio" Version="2.5.6">
 			<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>