Dependabot: 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/main/CHANGELOG.md)
- [Commits](prettier/prettier@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

@@ -57,7 +57,7 @@
     "jest-transform-css": "^2.0.0",
     "pa11y": "^5.3.0",
     "pa11y-ci": "^2.4.0",
-    "prettier": "^2.1.1",
+    "prettier": "^2.2.1",
     "pretty-quick": "^3.1.0"
   },
   "repository": {