address warnings in athenz-zts-nodejs-client build

[havetisyan]

[INFO] npm install
[INFO] npm WARN deprecated coffee-script@1.3.3: CoffeeScript on NPM has moved to "coffeescript" (no hyphen)
[INFO] npm WARN deprecated minimatch@0.2.14: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
[INFO] npm WARN deprecated minimatch@0.3.0: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
[INFO] npm WARN deprecated graceful-fs@1.2.3: please upgrade to graceful-fs 4 for compatibility with current and future versions of Node.js
[INFO] npm WARN deprecated formatio@1.1.1: This package is unmaintained. Use @sinonjs/formatio instead

@tatyano can you please a look at this one. thanks.

[ctyano]

We'll take a look. thank you.