fix(deps): update storybook monorepo to v7.0.21

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@storybook/addon-a11y (source)	7.0.20 -> 7.0.21
@storybook/addon-docs (source)	7.0.20 -> 7.0.21
@storybook/addon-essentials (source)	7.0.20 -> 7.0.21
@storybook/react-webpack5 (source)	7.0.20 -> 7.0.21
storybook (source)	7.0.20 -> 7.0.21

---

Release Notes

storybookjs/storybook

v7.0.21

Compare Source

• Angular: Fix 16.1 compatibility - #​23064, thanks @​ndelangen!
• Angular: Fix ivy preset - #​23070, thanks @​ndelangen!
• CLI: Improve steps in storybook init - #​22502, thanks @​yannbf!
• CLI: Skip builder selection for react native - #​23042, thanks @​dannyhw!
• Core: Fix builder-manager adding multiple dashes to relative path - #​22974, thanks @​MarioCadenas!
• Core: Improve of={...} DocBlock error in story index - #​22782, thanks @​shilman!
• Dependencies: Set vue-component-type-helpers to latest - #​23015, thanks @​ndelangen!
• Vue3: Fix source decorator to generate correct story code - #​22518, thanks @​chakAs3!
• Web-components: Fix custom-elements order of property application - #​19183, thanks @​sonntag-philipp!

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.