Bump date-fns from 2.30.0 to 4.0.0

Bumps [date-fns](https://github.com/date-fns/date-fns) from 2.30.0 to 4.0.0.
- [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/commits)

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

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

package.json

@@ -18,7 +18,7 @@
     "@popperjs/core": "^2.11.8",
     "@react-icons/all-files": "^4.1.0",
     "bootstrap": "^5.3.2",
-    "date-fns": "^2.30.0",
+    "date-fns": "^4.0.0",
     "flexsearch": "^0.7.31",
     "gatsby": "^5.13.3",
     "gatsby-plugin-feed": "^5.12.0",