chore: upgrade xunit runner to xunit.v3.runner.msbuild 3.2.2

[Copilot]

Follow-up to the xunit v3 migration — the test projects were still referencing xunit.runner.visualstudio (VSTest adapter) instead of the native v3 MSBuild runner.

Changes

• Replaced xunit.runner.visualstudio 3.1.5 → xunit.v3.runner.msbuild 3.2.2 across all 8 test projects

dotnet test continues to work via the Microsoft Testing Platform support (xunit.v3.mtp-v1) bundled with xunit.v3, which covers both net472 and net10.0 targets.

-<PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">
+<PackageReference Include="xunit.v3.runner.msbuild" Version="3.2.2">

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• xunit.net
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>xunit runner should be upgraded to v3 to match the recent upgrade</issue_title>
<issue_description>Follow up to #663

kiota-dotnet/tests/bundle/Microsoft.Kiota.Bundle.Tests.csproj

Line 11 in e70e350

<PackageReference Include="xunit.runner.visualstudio" Version="3.1.5">

-<PackageReference Include="xunit.runner.msbuild" Version="3.1.5">
+<PackageReference Include="xunit.v3.runner.msbuild" Version="3.2.2">
```</issue_description>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

• Fixes xunit runner should be upgraded to v3 to match the recent upgrade #686

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud