Build(deps-dev): Bump @types/sinon from 17.0.4 to 21.0.0 (#2421)

Bumps [@types/sinon](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/sinon) from 17.0.4 to 21.0.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/sinon)

---
updated-dependencies:
- dependency-name: "@types/sinon"
  dependency-version: 21.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -134,7 +134,7 @@
     "@types/ember": "^4.0.11",
     "@types/node": "^24.10.1",
     "@types/qunit": "^2.19.13",
-    "@types/sinon": "^17.0.4",
+    "@types/sinon": "^21.0.0",
     "@vitest/ui": "^4.0.10",
     "babel-plugin-ember-template-compilation": "^2.4.1",
     "babel-preset-env": "^1.7.0",