build(deps): bump @chakra-ui/react in /single-page-app/ui

Bumps [@chakra-ui/react](https://github.com/chakra-ui/chakra-ui/tree/HEAD/packages/react) from 2.8.2 to 3.21.1.
- [Release notes](https://github.com/chakra-ui/chakra-ui/releases)
- [Changelog](https://github.com/chakra-ui/chakra-ui/blob/main/packages/react/CHANGELOG.md)
- [Commits](https://github.com/chakra-ui/chakra-ui/commits/@chakra-ui/react@3.21.1/packages/react)

---
updated-dependencies:
- dependency-name: "@chakra-ui/react"
  dependency-version: 3.21.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

single-page-app/ui/package.json

@@ -11,7 +11,7 @@
   },
   "dependencies": {
     "@chakra-ui/icons": "^2.2.4",
-    "@chakra-ui/react": "^2.8.2",
+    "@chakra-ui/react": "^3.21.1",
     "@emotion/react": "^11.14.0",
     "@emotion/styled": "^11.14.0",
     "framer-motion": "^12.19.1",