Bump @storybook/addon-links from 6.3.6 to 6.3.9

Bumps [@storybook/addon-links](https://github.com/storybookjs/storybook/tree/HEAD/addons/links) from 6.3.6 to 6.3.9.
- [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/v6.3.9/addons/links)

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

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