Bump Verify.Xunit from 14.14.1 to 16.1.1

Bumps [Verify.Xunit](https://github.com/VerifyTests/Verify) from 14.14.1 to 16.1.1.
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](VerifyTests/Verify@14.14.1...16.1.1)

---
updated-dependencies:
- dependency-name: Verify.Xunit
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

test/Microsoft.OpenApi.Tests/Microsoft.OpenApi.Tests.csproj

@@ -21,7 +21,7 @@
     <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
     <PackageReference Include="SharpYaml" Version="1.8.0" />
     <PackageReference Include="Verify" Version="16.1.1" />
-    <PackageReference Include="Verify.Xunit" Version="14.14.1" />
+    <PackageReference Include="Verify.Xunit" Version="16.1.1" />
     <PackageReference Include="xunit" Version="2.4.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
       <PrivateAssets>all</PrivateAssets>