chore(deps): bump next to 15.5.7

[kguzek]

https://nextjs.org/blog/CVE-2025-66478

[Copilot]

Pull request overview

This PR updates Next.js from version 15.5.3 to 15.5.7 to address a security vulnerability (CVE-2025-66478). The update includes the core Next.js package, the @next/env package, and all platform-specific SWC binaries, along with transitive dependency updates in the lock file.

• Bumps Next.js to version 15.5.7 for security patch
• Updates all Next.js platform-specific binaries consistently
• Updates transitive dependencies in package-lock.json as expected

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
package.json	Updates Next.js dependency from ^15.5.3 to ^15.5.7
package-lock.json	Updates Next.js, @next/env, all @next/swc-* packages to 15.5.7, and updates various transitive dev dependencies

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