Bump prettier from 1.16.3 to 1.16.4 (#5342)

Bumps [prettier](https://github.com/prettier/prettier) from 1.16.3 to 1.16.4.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/1.16.3...1.16.4)

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

package.json

@@ -67,7 +67,7 @@
     "lint-staged": "^8.1.0",
     "mongodb-runner": "4.3.2",
     "nyc": "^13.1.0",
-    "prettier": "1.16.3",
+    "prettier": "1.16.4",
     "supports-color": "^6.0.0"
   },
   "scripts": {