build(deps): bump the xunit group in /src with 3 updates (#1059)

Bumps the xunit group in /src with 3 updates: [xunit](https://github.com/xunit/xunit), [xunit.runner.console](https://github.com/xunit/xunit) and [xunit.runner.visualstudio](https://github.com/xunit/visualstudio.xunit).


Updates `xunit` from 2.5.1 to 2.6.0
- [Commits](xunit/xunit@2.5.1...2.6.0)

Updates `xunit.runner.console` from 2.5.1 to 2.6.0
- [Commits](xunit/xunit@2.5.1...2.6.0)

Updates `xunit.runner.visualstudio` from 2.5.1 to 2.5.3
- [Release notes](https://github.com/xunit/visualstudio.xunit/releases)
- [Commits](xunit/visualstudio.xunit@2.5.1...2.5.3)

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

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

src/Directory.build.props

@@ -49,7 +49,7 @@
 
   <ItemGroup Condition="$(IsTestProject) or $(MSBuildProjectName.Contains('TestRunner'))">
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
-    <PackageReference Include="xunit" Version="2.5.1" />
+    <PackageReference Include="xunit" Version="2.6.0" />
     <PackageReference Include="Xunit.StaFact" Version="1.1.11" />
     <PackageReference Include="FluentAssertions" Version="6.12.0" />
     <PackageReference Include="Microsoft.Reactive.Testing" Version="6.0.0" />
@@ -58,8 +58,8 @@
   </ItemGroup>
 
   <ItemGroup Condition="$(IsTestProject)">
-    <PackageReference Include="xunit.runner.console" Version="2.5.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.1" />
+    <PackageReference Include="xunit.runner.console" Version="2.6.0" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3" />
     <PackageReference Include="coverlet.msbuild" Version="6.0.0" />
   </ItemGroup>