Bump react-stately from 3.19.0 to 3.21.0

Bumps [react-stately](https://github.com/adobe/react-spectrum) from 3.19.0 to 3.21.0.
- [Release notes](https://github.com/adobe/react-spectrum/releases)
- [Commits](https://github.com/adobe/react-spectrum/compare/[email protected]@3.21.0)

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

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

Author: dependabot[bot]

package.json

@@ -56,7 +56,7 @@
     "react-icons": "^4.7.1",
     "react-is": "^18.2.0",
     "react-markdown": "^8.0.4",
-    "react-stately": "^3.19.0",
+    "react-stately": "^3.21.0",
     "react-syntax-highlighter": "15.5.0",
     "react-youtube": "^10.1.0",
     "remark-gfm": "^3.0.1",