Bump @web/test-runner from 0.14.0 to 0.15.0 (#226)

Bumps [@web/test-runner](https://github.com/modernweb-dev/web/tree/HEAD/packages/test-runner) from 0.14.0 to 0.15.0.
- [Release notes](https://github.com/modernweb-dev/web/releases)
- [Changelog](https://github.com/modernweb-dev/web/blob/master/packages/test-runner/CHANGELOG.md)
- [Commits](https://github.com/modernweb-dev/web/commits/@web/test-runner@0.15.0/packages/test-runner)

---
updated-dependencies:
- dependency-name: "@web/test-runner"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

src/Umbraco.Web.UI.Client/package.json

@@ -74,7 +74,7 @@
 		"@typescript-eslint/parser": "^5.40.1",
 		"@web/dev-server-esbuild": "^0.3.1",
 		"@web/dev-server-import-maps": "^0.0.7",
-		"@web/test-runner": "^0.14.0",
+		"@web/test-runner": "^0.15.0",
 		"@web/test-runner-playwright": "^0.8.10",
 		"babel-loader": "^8.2.5",
 		"eslint": "^8.25.0",