Update storybook monorepo to v7.6.21

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@storybook/addon-essentials (source)	7.6.17 → 7.6.21
@storybook/addon-interactions (source)	7.6.17 → 7.6.21
@storybook/addon-links (source)	7.6.17 → 7.6.21
@storybook/blocks (source)	7.6.17 → 7.6.21
@storybook/react (source)	7.6.17 → 7.6.21
@storybook/react-vite (source)	7.6.17 → 7.6.21
storybook (source)	7.6.17 → 7.6.21

---

Release Notes

storybookjs/storybook (@​storybook/addon-essentials)

v7.6.21

Compare Source

• Core: Fix .env-file parsing, thanks @​jreinhold!

v7.6.20

Compare Source

• Core: Replace ip function to address security concerns #​27529, thanks @​tony19
• Telemetry: Detect Node version #​28299, thanks @​yannbf
• Angular: Support v18 #​27237, thanks @​valentinpalkovic

v7.6.19

Compare Source

7.6.19

• Fix bad release of 7.6.18 containing wrong dependency identifiers, thanks @​jreinhold!

v7.6.18

Compare Source

7.6.18

• Core: Fix addon bundling script #​26145, thanks @​ndelangen!

---

Configuration

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

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ 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 was generated by Mend Renovate. View the repository job log.