Update details_menu_migration linter config

[jamieshark]

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What are you trying to accomplish?

I am changing the expected config from an array of regex to an array of strings, since .yml will cast any regex as a string to the config anyway. I also updated the linter to transform the individual array entries into Regexp as well.

Screenshots

Integration

List the issues that this change affects.

Towards https://github.com/github/accessibility/issues/6473

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.

What approach did you choose and why?

Anything you want to highlight for special attention from reviewers?

Accessibility

• No new axe scan violation - This change does not introduce any new axe scan violations.

Merge checklist

• Added/updated tests
• Added/updated documentation
• Added/updated previews (Lookbook)
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge

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[changeset-bot]

🦋 Changeset detected

Latest commit: be070c0

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

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[keithamus]

LGTM