chore(package): update jest-mock to version 25.2.1

Closes #31

Author: greenkeeper[bot]

package.json

@@ -39,7 +39,7 @@
     "babel-code-frame": "6.26.0",
     "glob-all": "3.1.0",
     "jest": "23.1.0",
-    "jest-mock": "23.1.0",
+    "jest-mock": "25.2.1",
     "semantic-release": "15.7.2",
     "traverse": "0.6.6",
     "ts-jest": "23.1.4",