build(deps-dev): bump preact from 10.20.2 to 10.21.0 (#1417)

Bumps [preact](https://github.com/preactjs/preact) from 10.20.2 to 10.21.0.
- [Release notes](https://github.com/preactjs/preact/releases)
- [Commits](preactjs/preact@10.20.2...10.21.0)

---
updated-dependencies:
- dependency-name: preact
  dependency-type: direct:development
  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>

package.json

@@ -75,7 +75,7 @@
     "jest-environment-jsdom": "29.7.0",
     "jest-watch-typeahead": "2.2.2",
     "lint-staged": "15.2.2",
-    "preact": "10.20.2",
+    "preact": "10.21.0",
     "react": "18.3.1",
     "react-dom": "18.3.1",
     "rollup": "4.17.1",