chore(package): update @types/jest to version 25.1.1

Closes #41

Author: greenkeeper[bot]

package.json

@@ -57,7 +57,7 @@
   "devDependencies": {
     "@commitlint/cli": "^7.2.1",
     "@commitlint/config-conventional": "^7.1.2",
-    "@types/jest": "^24.0.4",
+    "@types/jest": "^25.1.1",
     "@types/node": "^11.9.3",
     "@typescript-eslint/eslint-plugin": "^1.2.0",
     "@typescript-eslint/parser": "^1.2.0",