fix: Bump sinon from 17.0.2 to 18.0.0 (#62)

Bumps [sinon](https://github.com/sinonjs/sinon) from 17.0.2 to 18.0.0.
- [Release notes](https://github.com/sinonjs/sinon/releases)
- [Changelog](https://github.com/sinonjs/sinon/blob/main/docs/changelog.md)
- [Commits](sinonjs/sinon@v17.0.2...v18.0.0)

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

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

package.json

@@ -16,7 +16,7 @@
     "@web/test-runner": "^0.18",
     "eslint": "^8",
     "eslint-config-brightspace": "^1.0",
-    "sinon": "^17"
+    "sinon": "^18"
   },
   "version": "2.1.0",
   "files": [