Newest version in NPM registry is 7.0.1

This is a continuation of https://github.com/istanbuljs/babel-plugin-istanbul/issues/325. The newest version of `babel-plugin-istanbul` on npmjs.com is 7.0.1. See: https://www.npmjs.com/package/babel-plugin-istanbul?activeTab=versions Version 7.0.1 is old and has dependencies with security vulnerabilities. `babel-plugin-istanbul` has newer versions on GitHub but stopped publishing them to npmjs.com. https://github.com/istanbuljs/babel-plugin-istanbul/issues/325 was closed but the newest version on npmjs.com is still 7.0.1 Please keep this issue open until npmjs.com has a new version of `babel-plugin-istanbul`.