build(deps-dev): bump @storybook/addon-storyshots from 5.2.6 to 5.3.8

Bumps [@storybook/addon-storyshots](https://github.com/storybookjs/storybook/tree/HEAD/addons/storyshots/storyshots-core) from 5.2.6 to 5.3.8.
- [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/v5.3.8/addons/storyshots/storyshots-core)

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

Author: dependabot-preview[bot]