Merge pull request #59 from graphcool/greenkeeper/ts-jest-22.0.0

Update ts-jest to the latest version 🚀

Author: schickling

package.json

@@ -31,7 +31,7 @@
     "@types/lodash": "^4.14.62",
     "jest": "^21.2.1",
     "mock-fs": "^4.3.0",
-    "ts-jest": "^21.0.1",
+    "ts-jest": "^22.0.0",
     "tslint": "^5.1.0"
   },
   "dependencies": {