build(deps): bump @reduxjs/toolkit from 1.9.7 to 2.1.0 in /www

Bumps [@reduxjs/toolkit](https://github.com/reduxjs/redux-toolkit) from 1.9.7 to 2.1.0.
- [Release notes](https://github.com/reduxjs/redux-toolkit/releases)
- [Commits](reduxjs/redux-toolkit@v1.9.7...v2.1.0)

---
updated-dependencies:
- dependency-name: "@reduxjs/toolkit"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

www/package.json

@@ -12,7 +12,7 @@
     "@emotion/styled": "^11.8.1",
     "@mui/icons-material": "^5.6.1",
     "@mui/x-date-pickers": "^6.4.0",
-    "@reduxjs/toolkit": "^1.8.6",
+    "@reduxjs/toolkit": "^2.1.0",
     "axios": "^1.2.0",
     "dayjs": "^1.11.6",
     "eslint": "^8.3.0",