Bump sinon from 8.1.1 to 9.0.0

Bumps [sinon](https://github.com/sinonjs/sinon) from 8.1.1 to 9.0.0.
- [Release notes](https://github.com/sinonjs/sinon/releases)
- [Changelog](https://github.com/sinonjs/sinon/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sinonjs/sinon/compare/v8.1.1...v9.0.0)

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

package.json

@@ -91,7 +91,7 @@
     "rollup-plugin-terser": "^5.0.0",
     "serve-static": "^1.14.0",
     "shx": "^0.3.2",
-    "sinon": "^8.0.0",
+    "sinon": "^9.0.0",
     "terser-webpack-plugin": "^2.0.1",
     "typescript": "3.5.3",
     "url-polyfill": "^1.1.5",