fix(deps): bump date-fns from 2.23.0 to 2.28.0 in /frontend (#1293)

Bumps [date-fns](https://github.com/date-fns/date-fns) from 2.23.0 to 2.28.0.
- [Release notes](https://github.com/date-fns/date-fns/releases)
- [Changelog](https://github.com/date-fns/date-fns/blob/master/CHANGELOG.md)
- [Commits](https://github.com/date-fns/date-fns/compare/v2.23.0...v2.28.0)

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

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

frontend/package.json

@@ -24,7 +24,7 @@
     "@vue/composition-api": "^1.6.2",
     "@vueuse/core": "^8.5.0",
     "core-js": "^3.15.1",
-    "date-fns": "^2.23.0",
+    "date-fns": "^2.28.0",
     "fuse.js": "^6.5.3",
     "isomorphic-dompurify": "^0.19.0",
     "nuxt": "^2.15.8",