build(deps): bump @reduxjs/toolkit from 1.9.7 to 2.2.1 in /apps/OpenSign

Bumps [@reduxjs/toolkit](https://github.com/reduxjs/redux-toolkit) from 1.9.7 to 2.2.1.
- [Release notes](https://github.com/reduxjs/redux-toolkit/releases)
- [Commits](https://github.com/reduxjs/redux-toolkit/compare/v1.9.7...v2.2.1)

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

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

apps/OpenSign/package.json

@@ -5,7 +5,7 @@
   "dependencies": {
     "@radix-ui/themes": "^2.0.3",
     "@react-pdf/renderer": "^3.3.8",
-    "@reduxjs/toolkit": "^1.9.7",
+    "@reduxjs/toolkit": "^2.2.1",
     "axios": "^1.6.0",
     "daisyui": "^3.9.2",
     "file-saver": "^2.0.5",