Bump mocha from 7.2.0 to 9.1.4

Bumps [mocha](https://github.com/mochajs/mocha) from 7.2.0 to 9.1.4.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v7.2.0...v9.1.4)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -35,7 +35,7 @@
     "chai": "^4.3.4",
     "eslint": "^8.6.0",
     "eslint-config-hexo": "^5.0.0",
-    "mocha": "^7.2.0",
+    "mocha": "^9.1.4",
     "nyc": "^15.1.0"
   },
   "dependencies": {