chore(deps): bump next (#6985)

Bumps [next](https://github.com/vercel/next.js) from 14.2.15 to 14.2.21.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.15...v14.2.21)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Sarah Etter <[email protected]>

Author: dependabot[bot]

tests/integration/__fixtures__/nx-integrated-monorepo/package.json

@@ -8,7 +8,7 @@
   "private": true,
   "dependencies": {
     "core-js": "^3.6.5",
-    "next": "14.2.15",
+    "next": "14.2.21",
     "react": "18.2.0",
     "react-dom": "18.2.0",
     "regenerator-runtime": "0.13.7",