chore(deps): update storybook monorepo to ^6.3.7 (patch)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@storybook/addon-essentials	^6.3.6 -> ^6.3.7
@storybook/addons	^6.3.6 -> ^6.3.7
@storybook/api	^6.3.6 -> ^6.3.7
@storybook/preact	^6.3.6 -> ^6.3.7
@storybook/theming	^6.3.6 -> ^6.3.7
@storybook/web-components	^6.3.6 -> ^6.3.7

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Release Notes

storybookjs/storybook

### [`v6.3.7`](https://togithub.com/storybookjs/storybook/blob/master/CHANGELOG.md#​637-August-10-2021) [Compare Source](https://togithub.com/storybookjs/storybook/compare/v6.3.6...v6.3.7) Fix bad publish of `6.4.0-alpha.27` to the `latest` tag

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