chore(package): update @types/jest to version 25.2.1

Closes #8

Author: greenkeeper[bot]

package.json

@@ -28,7 +28,7 @@
   },
   "homepage": "https://github.com/honkjs/forms",
   "devDependencies": {
-    "@types/jest": "^24.0.15",
+    "@types/jest": "^25.2.1",
     "jest": "^24.8.0",
     "np": "^4.0.2",
     "ts-jest": "^24.0.2",