build(deps-dev): bump @storybook/addon-docs from 9.1.10 to 9.1.15

Bumps [@storybook/addon-docs](https://github.com/storybookjs/storybook/tree/HEAD/code/addons/docs) from 9.1.10 to 9.1.15.
- [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/v9.1.15/code/addons/docs)

---
updated-dependencies:
- dependency-name: "@storybook/addon-docs"
  dependency-version: 9.1.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]