Bump @sentry/nextjs from 7.12.1 to 8.31.0 in /frontend

Bumps [@sentry/nextjs](https://github.com/getsentry/sentry-javascript) from 7.12.1 to 8.31.0.
- [Release notes](https://github.com/getsentry/sentry-javascript/releases)
- [Changelog](https://github.com/getsentry/sentry-javascript/blob/develop/CHANGELOG.md)
- [Commits](getsentry/sentry-javascript@7.12.1...8.31.0)

---
updated-dependencies:
- dependency-name: "@sentry/nextjs"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

frontend/package.json

@@ -40,7 +40,7 @@
     "@radix-ui/react-dialog": "^1.1.1",
     "@raruto/leaflet-elevation": "1.7.0",
     "@react-hook/resize-observer": "^1.2.6",
-    "@sentry/nextjs": "^7.12.1",
+    "@sentry/nextjs": "^8.31.0",
     "@tanstack/react-query": "^5.51.1",
     "@tanstack/react-query-devtools": "^5.51.1",
     "@zeit/next-source-maps": "^0.0.4-canary.1",