fix: upgrade next from 15.1.8 to 15.3.1

Snyk has created this PR to upgrade next from 15.1.8 to 15.3.1.

See this package in npm:
next

See this project in Snyk:
https://app.snyk.io/org/sammytezzy/project/34d2e0bd-1f60-45ff-aaac-1c72b8216316?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

examples/with-goober/package.json

@@ -8,7 +8,7 @@
   "dependencies": {
     "goober": "^2.1.10",
     "goober-autoprefixer": "^1.2.3",
-    "next": "latest",
+    "next": "15.3.1",
     "react": "^18.2.0",
     "react-dom": "^18.2.0"
   },