Bump xunit from 2.6.6 to 2.7.0

Bumps [xunit](https://github.com/xunit/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
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Directory.Packages.props

@@ -56,7 +56,7 @@
     <!-- Test -->
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="$(AspNetVersion)" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
-    <PackageVersion Include="xunit" Version="2.6.6" />
+    <PackageVersion Include="xunit" Version="2.7.0" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.6">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>