build(deps-dev): bump prettier from 2.1.1 to 2.1.2

Bumps [prettier](https://github.com/prettier/prettier) from 2.1.1 to 2.1.2.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](prettier/prettier@2.1.1...2.1.2)

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

package.json

@@ -36,7 +36,7 @@
     "minimatch": "~3.0.4",
     "mocha": "~8.1.3",
     "nyc": "~15.1.0",
-    "prettier": "2.1.1",
+    "prettier": "2.1.2",
     "rimraf": "~3.0.0",
     "sinon": "~9.0.0",
     "sinon-chai": "~3.5.0",