Add missing dependency for types

[Methuselah96]

Initial checklist

• I read the support docs
• I read the contributing guide
• I agree to follow the code of conduct
• I searched issues and couldn’t find anything (or linked relevant results below)
• If applicable, I’ve added docs and tests

Description of changes

Fix these type errors:

ERROR in ../../.yarn/cache/mdast-util-gfm-table-npm-1.0.3-e785b8b0a4-f310f06a57.zip/node_modules/mdast-util-gfm-table/index.d.ts 10:32-39
TS2307: Cannot find module 'mdast' or its corresponding type declarations.
     8 | /** @type {FromMarkdownExtension} */
     9 | export const gfmTableFromMarkdown: FromMarkdownExtension
  > 10 | export type AlignType = import('mdast').AlignType
       |                                ^^^^^^^
    11 | export type Table = import('mdast').Table
    12 | export type TableRow = import('mdast').TableRow
    13 | export type TableCell = import('mdast').TableCell

ERROR in ../../.yarn/cache/mdast-util-gfm-table-npm-1.0.3-e785b8b0a4-f310f06a57.zip/node_modules/mdast-util-gfm-table/index.d.ts 11:28-35
TS2307: Cannot find module 'mdast' or its corresponding type declarations.
     9 | export const gfmTableFromMarkdown: FromMarkdownExtension
    10 | export type AlignType = import('mdast').AlignType
  > 11 | export type Table = import('mdast').Table
       |                            ^^^^^^^
    12 | export type TableRow = import('mdast').TableRow
    13 | export type TableCell = import('mdast').TableCell
    14 | export type InlineCode = import('mdast').InlineCode

ERROR in ../../.yarn/cache/mdast-util-gfm-table-npm-1.0.3-e785b8b0a4-f310f06a57.zip/node_modules/mdast-util-gfm-table/index.d.ts 12:31-38
TS2307: Cannot find module 'mdast' or its corresponding type declarations.
    10 | export type AlignType = import('mdast').AlignType
    11 | export type Table = import('mdast').Table
  > 12 | export type TableRow = import('mdast').TableRow
       |                               ^^^^^^^
    13 | export type TableCell = import('mdast').TableCell
    14 | export type InlineCode = import('mdast').InlineCode
    15 | export type MarkdownTableOptions = import('markdown-table').MarkdownTableOptions

ERROR in ../../.yarn/cache/mdast-util-gfm-table-npm-1.0.3-e785b8b0a4-f310f06a57.zip/node_modules/mdast-util-gfm-table/index.d.ts 13:32-39
TS2307: Cannot find module 'mdast' or its corresponding type declarations.
    11 | export type Table = import('mdast').Table
    12 | export type TableRow = import('mdast').TableRow
  > 13 | export type TableCell = import('mdast').TableCell
       |                                ^^^^^^^
    14 | export type InlineCode = import('mdast').InlineCode
    15 | export type MarkdownTableOptions = import('markdown-table').MarkdownTableOptions
    16 | export type FromMarkdownExtension = import('mdast-util-from-markdown').Extension

ERROR in ../../.yarn/cache/mdast-util-gfm-table-npm-1.0.3-e785b8b0a4-f310f06a57.zip/node_modules/mdast-util-gfm-table/index.d.ts 14:33-40
TS2307: Cannot find module 'mdast' or its corresponding type declarations.
    12 | export type TableRow = import('mdast').TableRow
    13 | export type TableCell = import('mdast').TableCell
  > 14 | export type InlineCode = import('mdast').InlineCode
       |                                 ^^^^^^^
    15 | export type MarkdownTableOptions = import('markdown-table').MarkdownTableOptions
    16 | export type FromMarkdownExtension = import('mdast-util-from-markdown').Extension
    17 | export type FromMarkdownHandle = import('mdast-util-from-markdown').Handle

ERROR in ../../.yarn/cache/mdast-util-gfm-table-npm-1.0.3-e785b8b0a4-f310f06a57.zip/node_modules/mdast-util-gfm-table/index.d.ts 16:44-70
TS2307: Cannot find module 'mdast-util-from-markdown' or its corresponding type declarations.
    14 | export type InlineCode = import('mdast').InlineCode
    15 | export type MarkdownTableOptions = import('markdown-table').MarkdownTableOptions
  > 16 | export type FromMarkdownExtension = import('mdast-util-from-markdown').Extension
       |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^
    17 | export type FromMarkdownHandle = import('mdast-util-from-markdown').Handle
    18 | export type ToMarkdownExtension = import('mdast-util-to-markdown').Options
    19 | export type ToMarkdownHandle = import('mdast-util-to-markdown').Handle

ERROR in ../../.yarn/cache/mdast-util-gfm-table-npm-1.0.3-e785b8b0a4-f310f06a57.zip/node_modules/mdast-util-gfm-table/index.d.ts 17:41-67
TS2307: Cannot find module 'mdast-util-from-markdown' or its corresponding type declarations.
    15 | export type MarkdownTableOptions = import('markdown-table').MarkdownTableOptions
    16 | export type FromMarkdownExtension = import('mdast-util-from-markdown').Extension
  > 17 | export type FromMarkdownHandle = import('mdast-util-from-markdown').Handle
       |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^
    18 | export type ToMarkdownExtension = import('mdast-util-to-markdown').Options
    19 | export type ToMarkdownHandle = import('mdast-util-to-markdown').Handle
    20 | export type ToMarkdownContext = import('mdast-util-to-markdown').Context

[wooorm]

Same as syntax-tree/mdast-util-gfm#1 (comment)

[wooorm]

• AlignType and Table are not supposed to be exported, hence lib/ mentioned in the other PR here is needed instead of adding @types/mdast
• FromMarkdownExtension is supposed to be used in the export, so that change is correct

[wooorm]

Released!