Merge pull request #9 from abraham/renovate/ts-jest-23.x

Update dependency ts-jest to v23.0.1

Author: abraham

package.json

@@ -29,7 +29,7 @@
   "devDependencies": {
     "@types/jest": "23.3.0",
     "jest": "23.4.1",
-    "ts-jest": "23.0.0",
+    "ts-jest": "23.0.1",
     "typescript": "2.9.2"
   }
 }