build(deps-dev): bump @storybook/manager-api from 8.4.6 to 8.4.7

Bumps [@storybook/manager-api](https://github.com/storybookjs/storybook/tree/HEAD/code/lib/manager-api) from 8.4.6 to 8.4.7.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Commits](https://github.com/storybookjs/storybook/commits/v8.4.7/code/lib/manager-api)

---
updated-dependencies:
- dependency-name: "@storybook/manager-api"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>