Bump next from 14.2.13 to 14.2.15

Bumps [next](https://github.com/vercel/next.js) from 14.2.13 to 14.2.15.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.13...v14.2.15)

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

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

site/package.json

@@ -44,7 +44,7 @@
     "luxon": "^3.5.0",
     "moment": "^2.30.1",
     "moment-timezone": "^0.5.46",
-    "next": "^14.2.10",
+    "next": "^14.2.15",
     "next-auth": "^4.24.10"
   },
   "devDependencies": {

yarn.lock

@@ -3420,7 +3420,7 @@ __metadata:
     luxon: "npm:^3.5.0"
     moment: "npm:^2.30.1"
     moment-timezone: "npm:^0.5.46"
-    next: "npm:^14.2.10"
+    next: "npm:^14.2.15"
     next-auth: "npm:^4.24.10"
     react: "npm:^18.3.1"
     react-dom: "npm:^18.3.1"