chore(deps): bump @mantine/notifications in /frontend (#142)

Bumps [@mantine/notifications](https://github.com/mantinedev/mantine/tree/HEAD/packages/@mantine/notifications) 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/notifications)

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

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

frontend/package.json

@@ -13,7 +13,7 @@
     "@mantine/core": "^7.16.0",
     "@mantine/form": "^7.16.0",
     "@mantine/hooks": "^7.16.0",
-    "@mantine/notifications": "^7.16.0",
+    "@mantine/notifications": "^8.0.0",
     "@tanstack/react-query": "5",
     "axios": "^1.7.9",
     "i18next": "^25.0.0",