chore(deps-dev): bump prettier from 2.1.2 to 2.2.0

Bumps [prettier](https://github.com/prettier/prettier) from 2.1.2 to 2.2.0.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](prettier/prettier@2.1.2...2.2.0)

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

package.json

@@ -63,7 +63,7 @@
     "gulp-git": "2.10.1",
     "gulp-jasmine": "4.0.0",
     "jasmine-core": "3.6.0",
-    "prettier": "2.1.2",
+    "prettier": "2.2.0",
     "rimraf": "3.0.2",
     "rollup": "2.33.3",
     "rollup-plugin-prettier": "2.1.0",