chore(package): update ts-jest to version 23.1.3

Closes #81

Author: greenkeeper[bot]

package.json

@@ -26,7 +26,7 @@
     "react": "16.3.1",
     "react-dom": "16.3.1",
     "react-test-renderer": "16.3.2",
-    "ts-jest": "22.4.4",
+    "ts-jest": "23.1.3",
     "tslint": "5.9.0",
     "tslint-react": "3.5.0",
     "typescript": "2.8.1"