Update changesets config

[lucacavallaro]

List of changes

1. Set public as the default publishing mode to the NPM registry for changesets

Motivation and context

With the previous access value, our packages will be published as private (requiring a NPM paying subscription, to publish to the private registry)

Type of changes

• [ ] Add new resources
• [ ] Update configuration to existing resources
• [ ] Remove existing resources

Does this introduce a change to production resources with possible user impact?

• [ ] Yes, users may be impacted applying this change
• [ ] No

Other information