chore(deps): bump xunit from 2.3.1 to 2.6.6 (#53)

Bumps [xunit](https://github.com/xunit/xunit) from 2.3.1 to 2.6.6.
- [Commits](xunit/xunit@2.3.1...2.6.6)

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

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

test/Xunit.Xml.TestLogger.AcceptanceTests/Xunit.Xml.TestLogger.AcceptanceTests.csproj

@@ -14,7 +14,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="xunit" Version="2.3.1" />
+    <PackageReference Include="xunit" Version="2.6.6" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
   </ItemGroup>