Bump @mantine/core from 6.0.21 to 7.6.1 in /ui

Bumps [@mantine/core](https://github.com/mantinedev/mantine/tree/HEAD/packages/@mantine/core) from 6.0.21 to 7.6.1.
- [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/7.6.1/packages/@mantine/core)

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

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

Author: dependabot[bot]

ui/package.json

@@ -25,7 +25,7 @@
 		"@faker-js/faker": "^8.4.1",
 		"@ffmpeg/ffmpeg": "^0.12.7",
 		"@ffmpeg/util": "^0.12.1",
-		"@mantine/core": "^6.0.10",
+		"@mantine/core": "^7.6.1",
 		"@mantine/hooks": "^6.0.10",
 		"@monaco-editor/react": "^4.6.0",
 		"@tanstack/react-query": "^5.13.4",