chore(deps): Bump the testing group with 1 update

[dependabot]

Updated xunit.runner.visualstudio from 3.1.5 to 4.0.0.

Release notes

Sourced from xunit.runner.visualstudio's releases.

4.0.0

Release notes: https://xunit.net/releases/visualstudio/4.0.0

4.0.0-pre.5

Release notes: https://xunit.net/releases/visualstudio/4.0.0-pre.5

4.0.0-pre.4

Release notes: https://xunit.net/releases/visualstudio/4.0.0-pre.4

4.0.0-pre.3

Release notes: https://xunit.net/releases/visualstudio/4.0.0-pre.3

Commits viewable in compare view.

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore <dependency name> major version will close this group update PR and stop Dependabot creating any more for the specific dependency's major version (unless you unignore this specific dependency's major version or upgrade to it yourself)
• @dependabot ignore <dependency name> minor version will close this group update PR and stop Dependabot creating any more for the specific dependency's minor version (unless you unignore this specific dependency's minor version or upgrade to it yourself)
• @dependabot ignore <dependency name> will close this group update PR and stop Dependabot creating any more for the specific dependency (unless you unignore this specific dependency or upgrade to it yourself)
• @dependabot unignore <dependency name> will remove all of the ignore conditions of the specified dependency
• @dependabot unignore <dependency name> <ignore condition> will remove the ignore condition of the specified dependency and ignore conditions

---

Summary by cubic

Update xunit.runner.visualstudio from 3.1.5 to 4.0.0 so test execution uses the latest Visual Studio test adapter. This only affects the test project and may change test discovery and output formatting; production code is unaffected.

Review and rollout

• Verify tests discover and run via dotnet test and in CI; confirm trait filters and display names behave as before.
• If discovery changes appear in Test Explorer, clear local TestResults cache and re-run.
• No code changes required.

^{Written for commit 06e9e53. Summary will update on new commits.}

[dependabot]

Labels

The following labels could not be found: dependencies, nuget. Please create them before Dependabot can add them to a pull request.

Please fix the above issues or remove invalid values from dependabot.yml.