Bump mocha from 8.3.1 to 8.3.2 (#260)

Bumps [mocha](https://github.com/mochajs/mocha) from 8.3.1 to 8.3.2.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v8.3.1...v8.3.2)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -45,7 +45,7 @@
     "@financial-times/grafana-tools": "^2.0.1",
     "eslint": "^7.22.0",
     "istanbul": "^0.4",
-    "mocha": "^8.3.1",
+    "mocha": "^8.3.2",
     "mockery": "^2",
     "nodemon": "^2.0.7",
     "proclaim": "^3.6.0",