chore(deps): update storybook

This MR contains the following updates:

Package	Type	Update	Change
@storybook/addon-a11y	devDependencies	minor	6.3.12 -> 6.4.3
@storybook/addon-docs	devDependencies	minor	6.3.12 -> 6.4.3
@storybook/addon-essentials	devDependencies	minor	6.3.12 -> 6.4.3
@storybook/addon-knobs	devDependencies	minor	6.3.1 -> 6.4.0
@storybook/addon-storyshots	devDependencies	minor	6.3.12 -> 6.4.3
@storybook/addon-storyshots-puppeteer	devDependencies	minor	6.3.12 -> 6.4.3
@storybook/addon-viewport	devDependencies	minor	6.3.12 -> 6.4.3
@storybook/theming	devDependencies	minor	6.3.12 -> 6.4.3
@storybook/vue	devDependencies	minor	6.3.12 -> 6.4.3

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

---

Release Notes

storybookjs/storybook

v6.4.3

Compare Source

v6.4.2

Compare Source

v6.4.1

Compare Source

v6.4.0

Compare Source

storybookjs/addon-knobs

v6.4.0

Compare Source

---

Configuration

📅 Schedule: At any time (no schedule defined).

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

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

👻 Immortal: This MR will be recreated if closed unmerged. Get config help if that's undesired.

---

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

---

This MR has been generated by Renovate Bot.