Bump the xunit group with 1 update (#570)

Bumps the xunit group with 1 update: [xunit](https://github.com/xunit/xunit).


Updates `xunit` from 2.6.6 to 2.7.0
- [Commits](xunit/xunit@2.6.6...2.7.0)

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

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

Directory.Packages.props

@@ -9,9 +9,9 @@
     <PackageVersion Include="ReportGenerator" Version="5.2.1" />
     <PackageVersion Include="Shouldly" Version="4.2.1" />
     <PackageVersion Include="StyleCop.Analyzers" Version="1.2.0-beta.556" />
-    <PackageVersion Include="xunit" Version="2.6.6" />
+    <PackageVersion Include="xunit" Version="2.7.0" />
     <PackageVersion Include="xunit.abstractions" Version="2.0.3" />
-    <PackageVersion Include="xunit.extensibility.execution" Version="2.4.0" />
+    <PackageVersion Include="xunit.extensibility.execution" Version="2.7.0" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.7" />
   </ItemGroup>
   <ItemGroup>