Bump sveltekit-superforms from 2.20.1 to 2.21.0

Bumps [sveltekit-superforms](https://github.com/ciscoheat/sveltekit-superforms) from 2.20.1 to 2.21.0.
- [Release notes](https://github.com/ciscoheat/sveltekit-superforms/releases)
- [Changelog](https://github.com/ciscoheat/sveltekit-superforms/blob/main/CHANGELOG.md)
- [Commits](ciscoheat/sveltekit-superforms@v2.20.1...v2.21.0)

---
updated-dependencies:
- dependency-name: sveltekit-superforms
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -64,7 +64,7 @@
     "svelte": "4.2.19",
     "svelte-check": "4.1.0",
     "svelte-meta-tags": "3.1.4",
-    "sveltekit-superforms": "2.20.1",
+    "sveltekit-superforms": "2.21.0",
     "tslib": "2.8.1",
     "typescript": "5.6.3",
     "vite": "5.4.11",