Bump markdown-it from 8.4.2 to 12.1.0 in /api

[dependabot-preview]

Bumps markdown-it from 8.4.2 to 12.1.0.

Changelog

Sourced from markdown-it's changelog.

[12.1.0] - 2021-07-01

Changed

• Updated CM spec compatibility to 0.30.

[12.0.6] - 2021-04-16

Fixed

• Newline in alt should be rendered, #775.

[12.0.5] - 2021-04-15

Fixed

• HTML block tags with === inside are no longer incorrectly interpreted as headers, #772.
• Fix table/list parsing ambiguity, #767.

[12.0.4] - 2020-12-20

Fixed

• Fix crash introduced in 12.0.3 when processing strikethrough (~~) and similar plugins, #742.
• Avoid fenced token mutation, #745.

[12.0.3] - 2020-12-07

Fixed

• [](https://github.com/markdown-it/markdown-it/blob/master/<foo<bar>) is no longer a valid link.
• [](https://github.com/markdown-it/markdown-it/blob/master/url (xxx()) is no longer a valid link.
• [](https://github.com/markdown-it/markdown-it/blob/master/url\ xxx) is no longer a valid link.
• Fix performance issues when parsing links (#732, #734), backticks, (#733, #736), emphases (#735), and autolinks (#737).
• Allow newline in <? ... ?> in an inline context.
• Allow <meta> html tag to appear in an inline context.

[12.0.2] - 2020-10-23

Fixed

• Three pipes (|\n|\n|) are no longer rendered as a table with no columns, #724.

[12.0.1] - 2020-10-19

Fixed

• Fix tables inside lists indented with tabs, #721.

[12.0.0] - 2020-10-14

Added

• .gitattributes, force unix eol under windows, for development.

Changed

• Added 3rd argument to highlight(code, lang, attrs), #626.
• Rewrite tables according to latest GFM spec, #697.

... (truncated)

Commits

• 13cdeb9 12.1.0 released
• 13d8335 Dist rebuild
• eed156e Fix emphasis algorithm as per 0.30 spec
• 0b14fa0 Update CommonMark spec to 0.30
• 064d602 Updated highlight.js usage info
• df4607f 12.0.6 released
• e5b0eb3 dist rebuild
• 28d9ad8 Merge pull request #775 from hukkinj1/fix-image-newline
• 272a470 Fix newline not rendered in image alt attribute
• 3740146 12.0.5 released
• Additional commits viewable in compare view

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