Change 'skip changelog' label to 'skip changeset'

[camertron]

What are you trying to accomplish?

We'd like to change the skip changelog label to skip changeset to better reflect how we work and for consistency with primer/react. Several of our workflows are expecting the old skip changelog label. This PR corrects them.

Integration

No code changes required in production.

Risk Assessment

• Low risk the change is small, highly observable, and easily rolled back.
• Medium risk changes that are isolated, reduced in scope or could impact few users. The change will not impact library availability.
• High risk changes are those that could impact customers and SLOs, low or no test coverage, low observability, or slow to rollback.

Take a look at the What we look for in reviews section of the contributing guidelines for more information on how we review PRs.

[changeset-bot]

🦋 Changeset detected

Latest commit: 1e34397

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

This PR includes changesets to release 1 package

Name	Type
@primer/view-components	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[camertron]

Note that the "Check for changeset" check is going to fail until we update the label... which we shouldn't do until this PR is merged.