Update dependencies to fix security issues

[pmprete]

Updated chokidar, commander, lodash, nyc and mocha as they have security issues on the current versions.

Related Issue

#282

Changes

Updated dependencies at package.json

Declaration

• [ x ] I have followed the Contribution Guidelines.
• [ x ] All tests are passing.
• [ x ] ESLint doesn't produce any warnings.
• [ x] ESLint doesn't produce any errors.
  NOTE: It is fine if ESLint does produce warnings for your PR if there is a good reason for it.