Update dependency next to v15.5.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
next (source)	15.5.4 -> 15.5.6

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Release Notes

vercel/next.js (next)

v15.5.6

Compare Source

[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• Turbopack: don't define process.cwd() in node_modules #​83452

Credits

Huge thanks to @​mischnic for helping!

v15.5.5

Compare Source

[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• Split code-frame into separate compiled package (#​84238)
• Add deprecation warning to Runtime config (#​84650)
• fix: unstable_cache should perform blocking revalidation during ISR revalidation (#​84716)
• feat: experimental.middlewareClientMaxBodySize body cloning limit (#​84722)
• fix: missing next/link types with typedRoutes (#​84779)

Misc Changes

• docs: early October improvements and fixes (#​84334)

Credits

Huge thanks to @​devjiwonchoi, @​ztanner, and @​icyJoseph for helping!

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