Bump the testing group across 1 directory with 3 updates

Bumps the testing group with 3 updates in the / directory: [Verify.Xunit](https://github.com/VerifyTests/Verify), [xunit](https://github.com/xunit/xunit) and [xunit.runner.visualstudio](https://github.com/xunit/visualstudio.xunit).


Updates `Verify.Xunit` from 28.5.0 to 28.8.1
- [Release notes](https://github.com/VerifyTests/Verify/releases)
- [Commits](https://github.com/VerifyTests/Verify/commits)

Updates `xunit` from 2.9.2 to 2.9.3
- [Commits](xunit/xunit@v2-2.9.2...v2-2.9.3)

Updates `xunit.runner.visualstudio` from 2.8.2 to 3.0.1
- [Release notes](https://github.com/xunit/visualstudio.xunit/releases)
- [Commits](xunit/visualstudio.xunit@2.8.2...3.0.1)

---
updated-dependencies:
- dependency-name: Verify.Xunit
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: testing
- dependency-name: xunit
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: testing
- dependency-name: xunit.runner.visualstudio
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: testing
...

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

test/Tests.csproj

@@ -22,9 +22,9 @@
     </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="Shouldly" Version="4.2.1" />
-    <PackageReference Include="Verify.Xunit" Version="28.5.0" />
-    <PackageReference Include="xunit" Version="2.9.2" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
+    <PackageReference Include="Verify.Xunit" Version="28.8.1" />
+    <PackageReference Include="xunit" Version="2.9.3" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.0.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>