chore(deps): update storybook to v6.3.1

This MR contains the following updates:

Package	Type	Update	Change
@storybook/addon-a11y	devDependencies	minor	6.2.9 -> 6.3.1
@storybook/addon-docs	devDependencies	minor	6.2.9 -> 6.3.1
@storybook/addon-essentials	devDependencies	minor	6.2.9 -> 6.3.1
@storybook/addon-storyshots	devDependencies	minor	6.2.9 -> 6.3.1
@storybook/addon-storyshots-puppeteer	devDependencies	minor	6.2.9 -> 6.3.1
@storybook/addon-storysource	devDependencies	minor	6.2.9 -> 6.3.1
@storybook/addon-viewport	devDependencies	minor	6.2.9 -> 6.3.1
@storybook/theming	devDependencies	minor	6.2.9 -> 6.3.1
@storybook/vue	devDependencies	minor	6.2.9 -> 6.3.1

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

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Release Notes

storybookjs/storybook

v6.3.1

Compare Source

v6.3.0

Compare Source

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