Build(deps-dev): Bump sinon from 17.0.1 to 21.0.0 (#2384)

Bumps [sinon](https://github.com/sinonjs/sinon) from 17.0.1 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
...

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

Author: dependabot[bot]

package.json

@@ -176,7 +176,7 @@
     "qunit": "^2.24.2",
     "qunit-dom": "^3.5.0",
     "release-it": "^16.3.0",
-    "sinon": "^17.0.1",
+    "sinon": "^21.0.0",
     "stylelint": "^16.25.0",
     "stylelint-config-standard": "^39.0.1",
     "tailwindcss": "^4.1.14",