Bump prettier from 2.1.1 to 2.2.1 (#232)

Bumps [prettier](https://github.com/prettier/prettier) from 2.1.1 to 2.2.1.
- [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/2.1.1...2.2.1)

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 @@
     "jest": "^24.9.0",
     "jest-circus": "^26.6.3",
     "js-yaml": "^3.14.0",
-    "prettier": "^2.1.1",
+    "prettier": "^2.2.1",
     "ts-jest": "^24.2.0",
     "typescript": "^4.0.2"
   }