feat(cli): add flag to disable update notifications

[ahmadnassri]

What/Why/How?

allow skipping update checks in the cli by setting REDOCLY_SUPPRESS_UPDATE_NOTICE=true, useful for local development mode / production environments

the format of REDOCLY_SUPPRESS_UPDATE_NOTICE borrows from npm's NPM_CONFIG_UPDATE_NOTIFIER for familiarity / consistency.

Reference

Resolves #1639

Testing

no testing exists for this particular CLI path, so I did not include any additional tests.

Screenshots (optional)

N/A

Check yourself

• Code changed? - Tested with redoc/reference-docs/workflows (internal)
• All new/updated code is covered with tests
• New package installed? - Tested in different environments (browser/node)

Security

• Security impact of change has been considered
• Code follows company security practices and guidelines

[changeset-bot]

🦋 Changeset detected

Latest commit: 0e40999

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@redocly/cli	Patch
@redocly/openapi-core	Patch

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[tatomyr]

Thanks @ahmadnassri for the contribution!
@lornajane, could you take a look at the naming/behaviour when you have time?

[lornajane]

Thanks @ahmadnassri , this is a nice addition and it works as expected! We typically operate a zero-config convention where everything is false by default, and configuration can be added to change the behaviour. So for naming, how about REDOCLY_SUPPRESS_UPDATE_NOTICE ?

[ahmadnassri]

Thanks @ahmadnassri , this is a nice addition and it works as expected! We typically operate a zero-config convention where everything is false by default, and configuration can be added to change the behaviour. So for naming, how about REDOCLY_SUPPRESS_UPDATE_NOTICE ?

can certainly change the behaviour.

[ahmadnassri]

@lornajane updated the PR accordingly.

[lornajane]

Thanks @ahmadnassri !