Update `remark` to 13.x or later

[chitoku-k]

Since remark changed its internal parser to micromark in v13.0.0, a lot of remark plugins have not had bandwidth to rewrite their implementations.

The following plugins have been affected:

• 🟢gatsby-remark-autolink-headers
  • Supported as of v4.0.0
• 🟢gatsby-remark-copy-linked-files
  • Supported as of v4.0.0
• 🟢gatsby-remark-embed-gist
  • Works without any changes
• 🟢gatsby-remark-images
  • Supported as of v5.0.0
• ⚠️gatsby-remark-grid-tables
  • Pending
  • Repository: zestedesavoir/zmarkdown
  • remark-extended-table first seemed to be a good alternative but it turned out that it required to override the handlers option of toHast() from mdast-util-to-hast which Gatsby currently does not support for now.
• 🟢gatsby-remark-prismjs
  • Supported as of v5.0.0

See syntax extensions which haven’t been updated yet for the current status of each plugin listed above.

[chitoku-k]

@adobe/remark-gridtables could be a good alternative.