chore(package): update @types/jest to version 24.0.20

Closes #13

Author: greenkeeper[bot]

package.json

@@ -17,7 +17,7 @@
     "node": ">= 6.9.0"
   },
   "devDependencies": {
-    "@types/jest": "^23.1.0",
+    "@types/jest": "^24.0.20",
     "@types/loglevel": "^1.5.3",
     "@types/node": "^10.3.3",
     "jest": "^23.1.0",