fix(nextjs): Make exported server action async

[BRKalow]

Description

Fixes a reported issue where the following error was reported: https://nextjs.org/docs/messages/invalid-use-server-value

I'm not able to reproduce myself across a number of versions, but based on the documentation above, this function must be async, so I'm updating it.

Checklist

• npm test runs as expected.
• npm run build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other:

[changeset-bot]

🦋 Changeset detected

Latest commit: 93ec058

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

This PR includes changesets to release 1 package

Name	Type
@clerk/nextjs	Patch

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[louisgv]

LGTM 👍