build(deps): bump @types/storybook__react from 4.0.2 to 5.2.1

Bumps [@types/storybook__react](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/storybook__react) from 4.0.2 to 5.2.1.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/storybook__react)

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

packages/superset-ui-demo/package.json

@@ -45,7 +45,7 @@
     "@superset-ui/plugin-chart-word-cloud": "^0.11.15",
     "@superset-ui/query": "0.12.12",
     "@superset-ui/time-format": "0.12.12",
-    "@types/storybook__react": "4.0.2",
+    "@types/storybook__react": "5.2.1",
     "bootstrap": "^4.3.1",
     "core-js": "3.6.4",
     "react": "^16.6.0",