Bump xunit from 2.4.1 to 2.7.1 in /src

Bumps [xunit](https://github.com/xunit/xunit) from 2.4.1 to 2.7.1.
- [Commits](xunit/xunit@2.4.1...2.7.1)

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

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

src/Test/Test.csproj

@@ -16,7 +16,7 @@
 
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
-        <PackageReference Include="xunit" Version="2.4.1" />
+        <PackageReference Include="xunit" Version="2.7.1" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.4.1" />
         <PackageReference Include="System.Buffers" Version="4.5.1" />
         <PackageReference Include="System.Reflection.TypeExtensions" Version="4.4.0" />