chore: upgrade storybook to v6.5.8

[dierat]

Summary:

I noticed a buncha console errors in storybook about

The pseudo class ":first-child" is potentially unsafe when doing server-side rendering. Try changing it to ":first-of-type".

It looks like this was fixed in storybook v6.5.8 just a couple days ago:

• https://github.com/storybookjs/storybook/releases/tag/v6.5.8
• The pseudo class ":first-child" is potentially unsafe when doing server-side rendering.  storybookjs/storybook#6998 (comment)

Unfortunately, upgrading to v6.5.8 in this repo does not completely remove the console error, but it is less annoying.

Screenshots

Before

After

Test Plan:

Load up storybook and verify that error is now collapsed.

[codecov]

Codecov Report

Merging #1124 (c386a33) into next (545610c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             next    #1124   +/-   ##
=======================================
  Coverage   85.75%   85.75%           
=======================================
  Files         156      156           
  Lines        2365     2365           
  Branches      398      398           
=======================================
  Hits         2028     2028           
  Misses        336      336           
  Partials        1        1           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 545610c...c386a33. Read the comment docs.

[jinlee93]

Unfortunately, upgrading to v6.5.8 in this repo does not completely remove the console error, but it is less annoying.

I'll take less annoying, thanks!