Bump sinon from 16.1.3 to 21.0.0 in the tests-qunit group

Bumps the tests-qunit group with 1 update: [sinon](https://github.com/sinonjs/sinon).


Updates `sinon` from 16.1.3 to 21.0.0
- [Release notes](https://github.com/sinonjs/sinon/releases)
- [Changelog](https://github.com/sinonjs/sinon/blob/main/docs/changelog.md)
- [Commits](https://github.com/sinonjs/sinon/commits)

---
updated-dependencies:
- dependency-name: sinon
  dependency-version: 21.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: tests-qunit
...

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

Author: dependabot[bot]

package-lock.json

@@ -64,7 +64,7 @@
 		"qunit": "~2.24.2",
 		"react-refresh": "0.14.0",
 		"sass": "1.94.0",
-		"sinon": "16.1.3",
+		"sinon": "21.0.0",
 		"sinon-test": "~3.1.6",
 		"source-map-loader": "5.0.0",
 		"terser-webpack-plugin": "5.3.14",