Bump mocha from 7.2.0 to 8.1.3

Bumps [mocha](https://github.com/mochajs/mocha) from 7.2.0 to 8.1.3.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v7.2.0...v8.1.3)

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

package.json

@@ -28,7 +28,7 @@
   "devDependencies": {
     "@types/chai": "^4.0.4",
     "chai": "^4.1.2",
-    "mocha": "^7.0.0"
+    "mocha": "^8.1.3"
   },
   "dependencies": {
     "@types/node": "^13.1.8",