Update dependency jest to v22.2.1

Author: renovate-bot

package.json

@@ -18,7 +18,7 @@
   "devDependencies": {
     "eslint": "4.17.0",
     "eslint-plugin-prettier": "2.6.0",
-    "jest": "22.1.4",
+    "jest": "22.2.1",
     "localtunnel": "1.8.3",
     "prettier": "1.10.2"
   },