Suppress update now logging

[artsiommiksiuk]

Is your feature request related to a problem? Please describe.

I want to be able to hide this update now message on every run:

    ╔═══════════════════════════════════════════════════════╗
    ║                                                       ║
    ║  A new version of Redocly CLI (1.18.0) is available.  ║
    ║  Update now: `npm i -g @redocly/cli@latest`.          ║
    ║  Changelog: https://redocly.com/docs/cli/changelog/   ║
    ║                                                       ║
    ╚═══════════════════════════════════════════════════════╝

Describe the solution you'd like

cli option like --no-update-check, or config option for that will do.

Describe alternatives you've considered

I looked through documentation and issues, but didn't find any solution.

[lornajane]

Thanks for the suggestion. As an immediate workaround, this message is suppressed if you run the CLI from a continuous integration environment, so you can set an environment variable CI to true to avoid seeing this message.