chore(deps-dev): bump testdouble from 3.16.6 to 3.16.8

Bumps [testdouble](https://github.com/testdouble/testdouble.js) from 3.16.6 to 3.16.8.
- [Release notes](https://github.com/testdouble/testdouble.js/releases)
- [Changelog](https://github.com/testdouble/testdouble.js/blob/main/CHANGELOG.md)
- [Commits](https://github.com/testdouble/testdouble.js/compare/v3.16.6...v3.16.8)

---
updated-dependencies:
- dependency-name: testdouble
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -66,7 +66,7 @@
     "lint-staged": "^13.1.1",
     "prettier": "^2.7.1",
     "rollup": "^2.79.1",
-    "testdouble": "^3.16.6",
+    "testdouble": "^3.16.8",
     "yaml": "^2.1.3"
   }
 }