fix(vercel): add support for Node 22 (v8)

[bluwy]

Changes

fix #471

same as #447 for v7, but the changes got lost in v8

Testing

n/a

Docs

n/a

[changeset-bot]

🦋 Changeset detected

Latest commit: 0347fad

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

This PR includes changesets to release 19 packages

Name	Type
@astrojs/vercel	Patch
@test/astro-vercel-basic	Patch
@test/astro-vercel-image	Patch
@test/vercel-isr	Patch
@test/vercel-max-duration	Patch
@test/vercel-edge-middleware-with-edge-file	Patch
@test/vercel-edge-middleware-without-edge-file	Patch
@test/astro-vercel-no-output	Patch
@test/astro-vercel-prerendered-error-pages	Patch
@test/astro-vercel-redirects-serverless	Patch
@test/astro-vercel-redirects	Patch
@test/vercel-server-islands	Patch
@test/astro-vercel-serverless-prerender	Patch
@test/astro-vercel-serverless-with-dynamic-routes	Patch
@test/astro-vercel-static-assets	Patch
@test/astro-vercel-static	Patch
@test/vercel-streaming	Patch
@test/astro-vercel-with-web-analytics-enabled-output-as-static	Patch
vercel-hosted-astro-project	Patch

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[ematipico]

Shouldn't v20 be the default? Since we officially support v22 yet

[bluwy]

It refers to the default on vercel, not in astro