chore(deps): update dependency xunit to v2.6.6 (#449)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [xunit](https://github.com/xunit/xunit) | `2.6.5` -> `2.6.6` |
[![age](https://developer.mend.io/api/mc/badges/age/nuget/xunit/2.6.6?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/nuget/xunit/2.6.6?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/nuget/xunit/2.6.5/2.6.6?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/nuget/xunit/2.6.5/2.6.6?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>xunit/xunit (xunit)</summary>

### [`v2.6.6`](https://github.com/xunit/xunit/compare/2.6.5...2.6.6)

[Compare Source](https://github.com/xunit/xunit/compare/2.6.5...2.6.6)

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log
[here](https://developer.mend.io/github/Testably/Testably.Abstractions).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4xMjcuMCIsInVwZGF0ZWRJblZlciI6IjM3LjEyNy4wIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->

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

Directory.Packages.props

@@ -28,7 +28,7 @@
 		<PackageVersion Include="FluentAssertions" Version="6.12.0" />
 		<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
 		<PackageVersion Include="Xunit.SkippableFact" Version="1.4.13" />
-		<PackageVersion Include="xunit" Version="2.6.5" />
+		<PackageVersion Include="xunit" Version="2.6.6" />
 		<PackageVersion Include="xunit.runner.visualstudio" Version="2.5.6" />
 		<PackageVersion Include="coverlet.collector" Version="6.0.0" />
 		<PackageVersion Include="NSubstitute" Version="5.1.0" />