npm-dep: bump pocketbase from 0.20.3 to 0.21.0 in /frontend

Bumps [pocketbase](https://github.com/pocketbase/js-sdk) from 0.20.3 to 0.21.0.
- [Release notes](https://github.com/pocketbase/js-sdk/releases)
- [Changelog](https://github.com/pocketbase/js-sdk/blob/master/CHANGELOG.md)
- [Commits](https://github.com/pocketbase/js-sdk/compare/v0.20.3...v0.21.0)

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

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

frontend/package.json

@@ -44,7 +44,7 @@
 		"@fortawesome/free-solid-svg-icons": "^6.5.1",
 		"date-fns": "^3.3.1",
 		"npm-run-all": "^4.1.5",
-		"pocketbase": "^0.20.3",
+		"pocketbase": "^0.21.0",
 		"svelte-fa": "^4.0.2",
 		"svelte-french-toast": "^1.2.0",
 		"theme-change": "^2.5.0",