fix(package): update yeoman-generator to version 4.7.2

Closes #92

Author: greenkeeper[bot]

package.json

@@ -33,7 +33,7 @@
     "lodash.includes": "^4.3.0",
     "lodash.kebabcase": "^4.1.1",
     "make-dir": "^1.1.0",
-    "yeoman-generator": "^3.1.1"
+    "yeoman-generator": "^4.7.2"
   },
   "devDependencies": {
     "husky": "^1.2.0",