chore(deps): update storybook monorepo to v7.0.0-rc.8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@storybook/addon-essentials (source)	7.0.0-rc.7 -> 7.0.0-rc.8
@storybook/addon-interactions (source)	7.0.0-rc.7 -> 7.0.0-rc.8
@storybook/addon-links (source)	7.0.0-rc.7 -> 7.0.0-rc.8
@storybook/blocks (source)	7.0.0-rc.7 -> 7.0.0-rc.8
@storybook/nextjs (source)	7.0.0-rc.7 -> 7.0.0-rc.8
@storybook/react (source)	7.0.0-rc.7 -> 7.0.0-rc.8
storybook (source)	7.0.0-rc.7 -> 7.0.0-rc.8

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Release Notes

storybookjs/storybook

### [`v7.0.0-rc.8`](https://togithub.com/storybookjs/storybook/blob/HEAD/CHANGELOG.md#​700-rc8-March-25-2023) [Compare Source](https://togithub.com/storybookjs/storybook/compare/v7.0.0-rc.7...v7.0.0-rc.8) ##### Bug Fixes - TypeScript: Fix missing env in StorybookConfig [#​21732](https://togithub.com/storybooks/storybook/pull/21732) - Composition: Fix src of iframe unless the version changes [#​21713](https://togithub.com/storybooks/storybook/pull/21713) - Composition: Fix the ref loading state showing up as empty instead [#​21690](https://togithub.com/storybooks/storybook/pull/21690) ##### Build - Build: Add e2e-tests-dev task [#​21546](https://togithub.com/storybooks/storybook/pull/21546) - Build: Fix CI after github.com SSH change [#​21764](https://togithub.com/storybooks/storybook/pull/21764)

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