Bump date-fns from 2.30.0 to 4.1.0 in /web/frontend

Bumps [date-fns](https://github.com/date-fns/date-fns) from 2.30.0 to 4.1.0.
- [Release notes](https://github.com/date-fns/date-fns/releases)
- [Changelog](https://github.com/date-fns/date-fns/blob/main/CHANGELOG.md)
- [Commits](https://github.com/date-fns/date-fns/compare/v2.30.0...v4.1.0)

---
updated-dependencies:
- dependency-name: date-fns
  dependency-version: 4.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

web/frontend/package.json

@@ -21,7 +21,7 @@
     "@sveltestrap/sveltestrap": "^6.2.7",
     "@urql/svelte": "^4.2.2",
     "chart.js": "^4.4.6",
-    "date-fns": "^2.30.0",
+    "date-fns": "^4.1.0",
     "graphql": "^16.9.0",
     "mathjs": "^12.4.3",
     "svelte-chartjs": "^3.1.5",