Fix minimist to secure latest version

Author: getdave

package-lock.json

@@ -7,7 +7,8 @@
     "@wordpress/env": "^1.0.1",
     "grunt": "^1.1.0",
     "grunt-wp-i18n": "^1.0.3",
-    "grunt-wp-readme-to-markdown": "^2.0.1"
+    "grunt-wp-readme-to-markdown": "^2.0.1",
+    "minimist": "^1.2.5"
   },
   "scripts": {
     "preenv:*": "nvm install lts/* && nvm use",