fix(deps): update dependency mdast-util-gfm-strikethrough to v2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mdast-util-gfm-strikethrough	^0.2.3 -> ^2.0.0

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Release Notes

syntax-tree/mdast-util-gfm-strikethrough (mdast-util-gfm-strikethrough)

v2.0.0

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Change

• 7f34853 Update @types/mdast, mdast utilities
  migrate: update too
• 7eef26c Change to require Node.js 16
  migrate: update too
• 13586c9 Change to use exports
  migrate: don’t use private APIs
• 2e35fca Change to expose functions
  migrate: gfmStrikethroughFromMarkdown -> gfmStrikethroughFromMarkdown() and gfmStrikethroughToMarkdown -> gfmStrikethroughToMarkdown()

Full Changelog: syntax-tree/mdast-util-gfm-strikethrough@1.0.3...2.0.0

v1.0.3

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Misc

• bf5e841 Add improved docs
• 0ba3b1b c628864 Refactor code-style
• 059e140 00691e9 080b6f5 Update tsconfig.json

Full Changelog: syntax-tree/mdast-util-gfm-strikethrough@1.0.2...1.0.3

v1.0.2

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• 98a14b4 Remove escapes of ~ in phrasing when it’s fine
  by @​bertramakers in https://github.com/syntax-tree/mdast-util-gfm-strikethrough/pull/2
• 24d6765 Add improved docs

Full Changelog: syntax-tree/mdast-util-gfm-strikethrough@1.0.1...1.0.2

v1.0.1

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• b851c1a Add support for position tracking

Full Changelog: syntax-tree/mdast-util-gfm-strikethrough@1.0.0...1.0.1

v1.0.0

Compare Source

• b0b9c3a Add JSDoc based types
• 8920833 Add better docs
• 0a79140 Use ESM

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