chore(package): update ts-jest to version 22.0.0

Author: greenkeeper[bot]

package.json

@@ -33,7 +33,7 @@
     "nodemon": "^1.13.3",
     "nsp": "^3.1.0",
     "supertest": "^3.0.0",
-    "ts-jest": "^21.2.4",
+    "ts-jest": "^22.0.0",
     "ts-node": "^4.0.0",
     "tslint": "^5.5.0",
     "tslint-loader": "^3.5.3",