chore(deps): bump next from 14.1.1 to 15.5.18

Bumps [next](https://github.com/vercel/next.js) from 14.1.1 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@v14.1.1...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]

package.json

@@ -41,7 +41,7 @@
     "gray-matter": "^4.0.3",
     "js-cookie": "^3.0.1",
     "jsbarcode": " 3.11.0",
-    "next": "^14.1.1",
+    "next": "^15.5.18",
     "next-auth": "^4.10.3",
     "next-plausible": "^3.1.4",
     "next-qrcode": "^2.5.1",