chore(deps-dev): bump mocha from 6.2.3 to 9.1.0

Bumps [mocha](https://github.com/mochajs/mocha) from 6.2.3 to 9.1.0.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v6.2.3...v9.1.0)

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

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

package.json

@@ -39,7 +39,7 @@
     "eslint-plugin-promise": "^4.2.1",
     "eslint-plugin-standard": "^5.0.0",
     "globby": "^10.0.1",
-    "mocha": "^6.2.2",
+    "mocha": "^9.1.0",
     "nyc": "^15.1.0",
     "recast": "^0.20.5",
     "semantic-release": "^17.4.5"