Bump @storybook/addon-onboarding from 8.2.9 to 8.4.7

Bumps [@storybook/addon-onboarding](https://github.com/storybookjs/storybook/tree/HEAD/code/addons/onboarding) from 8.2.9 to 8.4.7.
- [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/v8.4.7/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] <[email protected]>

package.json

@@ -32,7 +32,7 @@
     "@storybook/addon-essentials": "^8.4.6",
     "@storybook/addon-interactions": "^8.4.6",
     "@storybook/addon-links": "^8.2.9",
-    "@storybook/addon-onboarding": "^8.2.9",
+    "@storybook/addon-onboarding": "^8.4.7",
     "@storybook/blocks": "^8.4.6",
     "@storybook/test": "^8.4.7",
     "@storybook/vue3": "^8.3.6",