build: Update NextJS to address CVE (#24277)

## Description

Updates NextJS to address
https://nvd.nist.gov/vuln/detail/CVE-2025-29927. Of note, we only use
NextJS in a test application, nothing that gets deployed anywhere.

Author: alexvy86

examples/apps/ai-collab/package.json

@@ -58,7 +58,7 @@
 		"eslint": "~8.55.0",
 		"fluid-framework": "workspace:~",
 		"mui": "^0.0.1",
-		"next": "^14.2.8",
+		"next": "^14.2.27",
 		"notistack": "^3.0.1",
 		"openai": "^4.67.3",
 		"react": "^18.3.1",