Update to Slate 0.63 and Storybook 6.2.9

[dselman]

Upgrade Slate and Storybook to the latest versions.

Changes

• Update to Slate 0.63
• Update to Storybook 6.2.9

Flags

• slate-history is at version 0.62, there isn't a 0.63 version
• still has issues with Fixed Interest template (under investigation)

Screenshots or Video

Related Issues

• Issue #
• Pull Request #

Author Checklist

• [ ] Ensure you provide a DCO sign-off for your commits using the --signoff option of git commit.
• [ ] Vital features and changes captured in unit and/or integration tests
• [ ] Commits messages follow AP format
• [ ] Extend the documentation, if necessary
• [ ] Merging to master from fork:branchname
• [ ] Manual accessibility test performed
  • [ ] Keyboard-only access, including forms
  • [ ] Contrast at least WCAG Level A
  • [ ] Appropriate labels, alt text, and instructions

[cypress[bot]]

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Test summary

1 • 0 • 0 • 0

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Run details

Project	web-components
Status	Passed
Commit	6011e58c83
Started	May 26, 2021 9:23 PM
Ended	May 26, 2021 9:25 PM
Duration	01:21 💡
OS	Linux Ubuntu - 20.04
Browser	Chrome 90

View run in Cypress Dashboard ➡️

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