chore(package): update @types/jest to version 25.1.5

Closes #239

Author: greenkeeper[bot]

package.json

@@ -90,7 +90,7 @@
   "devDependencies": {
     "@types/express": "^4.17.2",
     "@types/graphql": "^14.5.0",
-    "@types/jest": "^24.0.25",
+    "@types/jest": "^25.1.5",
     "@types/lodash": "^4.14.149",
     "@types/request": "^2.48.4",
     "@types/supertest": "^2.0.8",