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
...

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

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",

frontend/yarn.lock

@@ -4321,10 +4321,10 @@ data-urls@^3.0.1:
     whatwg-mimetype "^3.0.0"
     whatwg-url "^11.0.0"
 
-date-fns@^2.23.0:
-  version "2.23.0"
-  resolved "https://registry.yarnpkg.com/date-fns/-/date-fns-2.23.0.tgz#4e886c941659af0cf7b30fafdd1eaa37e88788a9"
-  integrity sha512-5ycpauovVyAk0kXNZz6ZoB9AYMZB4DObse7P3BPWmyEjXNORTI8EJ6X0uaSAq4sCHzM1uajzrkr6HnsLQpxGXA==
+date-fns@^2.28.0:
+  version "2.28.0"
+  resolved "https://registry.yarnpkg.com/date-fns/-/date-fns-2.28.0.tgz#9570d656f5fc13143e50c975a3b6bbeb46cd08b2"
+  integrity sha512-8d35hViGYx/QH0icHYCeLmsLmMUheMmTyV9Fcm6gvNwdw31yXXH+O85sOBJ+OLnLQMKZowvpKb6FgMIQjcpvQw==
 
 de-indent@^1.0.2:
   version "1.0.2"