Bump pagefind from 1.3.0 to 1.4.0

Bumps [pagefind](https://github.com/pagefind/pagefind) from 1.3.0 to 1.4.0.
- [Release notes](https://github.com/pagefind/pagefind/releases)
- [Changelog](https://github.com/Pagefind/pagefind/blob/main/CHANGELOG.md)
- [Commits](Pagefind/pagefind@v1.3.0...v1.4.0)

---
updated-dependencies:
- dependency-name: pagefind
  dependency-version: 1.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -36,7 +36,7 @@
     "lite-youtube-embed": "^0.3.3",
     "marked": "^16.1.1",
     "nanostores": "^1.0.1",
-    "pagefind": "^1.3.0",
+    "pagefind": "^1.4.0",
     "rehype-autolink-headings": "^7.1.0",
     "rehype-slug": "^6.0.0",
     "remark-toc": "^9.0.0",