build(deps): bump mobx-react from 7.6.0 to 9.1.0 in /website

Bumps [mobx-react](https://github.com/mobxjs/mobx) from 7.6.0 to 9.1.0.
- [Release notes](https://github.com/mobxjs/mobx/releases)
- [Commits](https://github.com/mobxjs/mobx/compare/mobx-react@7.6.0...mobx-react@9.1.0)

---
updated-dependencies:
- dependency-name: mobx-react
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

website/package.json

@@ -20,7 +20,7 @@
     "date-fns": "^2.30.0",
     "google-protobuf": "^4.0.0-rc.1",
     "mobx": "^6.10.2",
-    "mobx-react": "^7.6.0",
+    "mobx-react": "^9.1.0",
     "mobx-utils": "^6.0.7",
     "numeral": "^2.0.6",
     "qrcode": "^1.5.3",