Bump prettier from 2.1.2 to 2.2.1

Bumps [prettier](https://github.com/prettier/prettier) from 2.1.2 to 2.2.1.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](prettier/prettier@2.1.2...2.2.1)

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

Author: dependabot[bot]

package-lock.json

@@ -45,7 +45,7 @@
     "@types/semver": "^7.3.4",
     "@zeit/ncc": "^0.22.3",
     "jest": "^25.5.4",
-    "prettier": "^2.1.2",
+    "prettier": "^2.2.1",
     "ts-jest": "^25.5.1",
     "typescript": "^3.9.7"
   }