build(deps-dev): bump sinon from 15.2.0 to 21.0.1

Bumps [sinon](https://github.com/sinonjs/sinon) from 15.2.0 to 21.0.1.
- [Release notes](https://github.com/sinonjs/sinon/releases)
- [Changelog](https://github.com/sinonjs/sinon/blob/main/docs/changelog.md)
- [Commits](sinonjs/sinon@v15.2.0...v21.0.1)

---
updated-dependencies:
- dependency-name: sinon
  dependency-version: 21.0.1
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -62,7 +62,7 @@
     "rollup-plugin-sass": "^1.15.3",
     "rollup-plugin-terser": "^7.0.2",
     "rollup-plugin-visualizer": "^6.0.5",
-    "sinon": "^15.2.0",
+    "sinon": "^21.0.1",
     "start-server-and-test": "^2.1.3"
   },
   "engines": {