chore: yargs v15 and yargs-parser v18 (#53)

resolve security vulnerability

Author: johanneswuerbach

package-lock.json

@@ -55,13 +55,13 @@
     "lint-staged": "^9.2.1",
     "minimist": "^1.2.0",
     "standard-version": "^7.0.0",
-    "yargs-parser": "^13.1.1"
+    "yargs-parser": "^18.1.3"
   },
   "dependencies": {
     "camelcase": "^5.3.1",
     "decamelize": "^1.2.0",
     "flat": "^4.1.0",
     "is-plain-obj": "^1.1.0",
-    "yargs": "^14.0.0"
+    "yargs": "^15.3.1"
   }
 }