chore(deps): bump next from 15.1.9 to 16.1.5 in /e2e-projects/nextjs

Bumps [next](https://github.com/vercel/next.js) from 15.1.9 to 16.1.5.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v15.1.9...v16.1.5)

---
updated-dependencies:
- dependency-name: next
  dependency-version: 16.1.5
  dependency-type: direct:production
...

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

Author: dependabot[bot]

e2e-projects/nextjs/package.json

@@ -9,7 +9,7 @@
 	"dependencies": {
 		"@prismicio/client": "^7.16.0",
 		"@prismicio/react": "*",
-		"next": "15.1.9",
+		"next": "16.1.5",
 		"react": "19.2.1",
 		"react-dom": "19.2.1"
 	},