chore(deps): update dependency husky to v4

Author: renovate-bot

package.json

@@ -113,7 +113,7 @@
         "gulp-strip-code": "^0.1.4",
         "highlight.js": "^9.12.0",
         "html-webpack-plugin": "^3.2.0",
-        "husky": "^3.1.0",
+        "husky": "^4.0.0",
         "istanbul-instrumenter-loader": "^3.0.0",
         "jest": "^24.0.0",
         "jest-serializer-vue": "^2.0.0",