Update dependency ts-jest to v22.0.1

Author: renovate-bot

package.json

@@ -25,7 +25,7 @@
     "@types/minimist": "1.2.0",
     "jest": "22.1.4",
     "bot-tester": "3.3.2",
-    "ts-jest": "20.0.14",
+    "ts-jest": "22.0.1",
     "ts-node": "4.1.0",
     "tslint": "5.9.1",
     "typescript": "2.6.2"