build(deps-dev): bump next from 16.0.7 to 16.0.9

Bumps [next](https://github.com/vercel/next.js) from 16.0.7 to 16.0.9.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v16.0.7...v16.0.9)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.0.9
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -645,7 +645,7 @@
     "jest-axe": "^10.0.0",
     "jsdom": "^27.2.0",
     "mermaid": "^11.12.1",
-    "next": "^16.0.7",
+    "next": "^16.0.9",
     "nunjucks": "^3.2.4",
     "playwright": "^1.56.1",
     "prettier": "^3.7.0",