Update dependency next to v15.5.7 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
next (source)	15.5.6 -> 15.5.7

GitHub Vulnerability Alerts

CVE-2025-66478

A vulnerability affects certain React packages¹ for versions 19.0.0, 19.1.0, 19.1.1, and 19.2.0 and frameworks that use the affected packages, including Next.js 15.x and 16.x using the App Router. The issue is tracked upstream as CVE-2025-55182.

Fixed in:
React: 19.0.1, 19.1.2, 19.2.1
Next.js: 15.0.5, 15.1.9, 15.2.6, 15.3.6, 15.4.8, 15.5.7, 16.0.7

The vulnerability also affects experimental canary releases starting with 14.3.0-canary.77. Users on any of the 14.3 canary builds should either downgrade to a 14.x stable release or 14.3.0-canary.76.

All users of stable 15.x or 16.x Next.js versions should upgrade to a patched, stable version immediately.

¹ The affected React packages are:

• react-server-dom-parcel
• react-server-dom-turbopack
• react-server-dom-webpack

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Release Notes

vercel/next.js (next)

v15.5.7

Compare Source

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Configuration

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