chore(deps-dev): bump prettier from 1.19.1 to 2.0.5

Bumps [prettier](https://github.com/prettier/prettier) from 1.19.1 to 2.0.5.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](prettier/prettier@1.19.1...2.0.5)

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

package.json

@@ -36,7 +36,7 @@
     "mocha": "^7.1.0",
     "mocha-lcov-reporter": "^1.3.0",
     "nyc": "^15.0.0",
-    "prettier": "^1.18.2",
+    "prettier": "^2.0.5",
     "pretty-quick": "^2.0.1",
     "semantic-release": "^15.13.20"
   },