chore(deps)(deps): bump next from 15.5.10 to 15.5.18

Bumps [next](https://github.com/vercel/next.js) from 15.5.10 to 15.5.18.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.5.10...v15.5.18)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.5.18
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pnpm-lock.yaml

@@ -12,7 +12,7 @@ catalogs:
     vitest: 3.1.3
   security:
     '@clerk/nextjs': 6.39.3
-    next: 15.5.15
+    next: 15.5.18
     vite: 8.0.9
 
 # Supply-chain hardening — see skills/stash-supply-chain-security/