fix traced warnings from unexpected token

[styfle]

Please don't delete this checklist! Before submitting the PR, please make sure you do the following:

• Fixes Build Fails During (Due To?) Log Cleanup Added in @sveltejs/adapter-vercel@1.0.0-next.63  #5577
• This message body should clearly illustrate what problems it solves.
• Ideally, include a test that fails without this PR but passes with it.

Tests

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Changesets

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[changeset-bot]

🦋 Changeset detected

Latest commit: 25a5871

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

This PR includes changesets to release 2 packages

Name	Type
@sveltejs/adapter-vercel	Patch
@sveltejs/adapter-auto	Patch

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