build(deps): bump next

Bumps the npm_and_yarn group with 1 update in the /environment_tests/test-exports-vercel directory: [next](https://github.com/vercel/next.js).


Updates `next` from 14.2.26 to 15.2.4
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.26...v15.2.4)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 15.2.4
  dependency-type: direct:production
  dependency-group: npm_and_yarn
...

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

Author: dependabot[bot]

environment_tests/test-exports-vercel/package.json

@@ -20,7 +20,7 @@
     "@types/react-dom": "18.0.11",
     "eslint": "8.37.0",
     "eslint-config-next": "13.3.0",
-    "next": "14.2.26",
+    "next": "15.2.4",
     "react": "18.2.0",
     "react-dom": "18.2.0",
     "typescript": "^5.0.0"