Is there an existing issue for this?

• I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• I have reviewed the documentation https://docs.sentry.io/
• I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/nextjs

SDK Version

8.12.0

Framework Version

No response

Link to Sentry event

No response

SDK Setup

No response

Steps to Reproduce

Expected Result

no errors

Actual Result

Fails to build on latest canary with new option:

        sourcemaps: {
          deleteSourcemapsAfterUpload: true,
        },