build(deps-dev): bump @storybook/addon-onboarding from 8.3.6 to 8.5.1

Bumps [@storybook/addon-onboarding](https://github.com/storybookjs/storybook/tree/HEAD/code/addons/onboarding) from 8.3.6 to 8.5.1.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v8.5.1/code/addons/onboarding)

---
updated-dependencies:
- dependency-name: "@storybook/addon-onboarding"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -61,7 +61,7 @@
     "@storybook/addon-essentials": "^8.1.10",
     "@storybook/addon-interactions": "^8.1.10",
     "@storybook/addon-links": "^8.1.10",
-    "@storybook/addon-onboarding": "^8.1.10",
+    "@storybook/addon-onboarding": "^8.5.1",
     "@storybook/blocks": "^8.3.6",
     "@storybook/nextjs": "^8.1.10",
     "@storybook/react": "^8.1.10",