chore: update html-webpack-plugin verison

Author: zhoudewei2526

package.json

@@ -112,7 +112,7 @@
         "gulp": "^4.0.1",
         "gulp-babel": "^7.0.0",
         "gulp-strip-code": "^0.1.4",
-        "html-webpack-plugin": "4.0.4",
+        "html-webpack-plugin": "^4.2.0",
         "husky": "^4.0.0",
         "istanbul-instrumenter-loader": "^3.0.0",
         "jest": "^24.0.0",