chore(deps): bump @mantine/core from 7.17.7 to 8.0.0 in /frontend (#143)

Bumps [@mantine/core](https://github.com/mantinedev/mantine/tree/HEAD/packages/@mantine/core) from 7.17.7 to 8.0.0.
- [Release notes](https://github.com/mantinedev/mantine/releases)
- [Changelog](https://github.com/mantinedev/mantine/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mantinedev/mantine/commits/8.0.0/packages/@mantine/core)

---
updated-dependencies:
- dependency-name: "@mantine/core"
  dependency-version: 8.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

frontend/package.json

@@ -10,7 +10,7 @@
     "preview": "vite preview"
   },
   "dependencies": {
-    "@mantine/core": "^7.16.0",
+    "@mantine/core": "^8.0.0",
     "@mantine/form": "^7.16.0",
     "@mantine/hooks": "^7.16.0",
     "@mantine/notifications": "^8.0.0",