Bump next from 14.2.10 to 14.2.21

Bumps [next](https://github.com/vercel/next.js) from 14.2.10 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](https://github.com/vercel/next.js/compare/v14.2.10...v14.2.21)

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

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

package.json

@@ -10,7 +10,7 @@
     },
     "dependencies": {
         "bootstrap": "^5.3.2",
-        "next": "14.2.10",
+        "next": "14.2.21",
         "react": "^18",
         "react-bootstrap": "^2.9.0",
         "react-dom": "^18",