chore(package): update husky to version 4.0.3

Closes #117

Author: greenkeeper[bot]

package.json

@@ -65,7 +65,7 @@
     "@types/nock": "^11.1.0",
     "@types/node": "^12.0.0",
     "chai": "^4.2.0",
-    "husky": "^3.0.0",
+    "husky": "^4.0.3",
     "isomorphic-fetch": "^2.2.1",
     "lodash": "^4.17.11",
     "mobx": "^3.6.2",