Bump Markdig from 1.3.2 to 1.4.0

[dependabot]

Updated Markdig from 1.3.2 to 1.4.0.

Release notes

Sourced from Markdig's releases.

1.4.0

Changes

✨ New Features

• Add strict GFM pipe table parsing mode (14cd25c7)

🐛 Bug Fixes

• Fix heading auto-link hijacking nested link labels (#​668) (PR #​949) by @​dualfroz
• Fix: keep trailing content out of an unmatched emphasis closer (#​743) (PR #​950) by @​dualfroz
• Fix indent on first list item (#​482) (PR #​953) by @​boxofyellow
• Add Normalization Support for PipeTables (GFM) (PR #​954) by @​boxofyellow
• Fix partially empty pipe table separator regression (PR #​955) by @​vicancy
• Reject emoji-parsing if the slice ends with ** (PR #​947) by @​bstordrup
• Fix strict GFM tables against native cmark-gfm (86866b91)

🚀 Enhancements

• Update 3rd party extensions (PR #​945) by @​Kryptos-FR

🏭 Tests

• Fix tests warnings (96b024c2)

📦 Dependencies

• Bump deps (c6b186b4)

🧰 Misc

• Use NuGet Trusted Publishing via dotnet-releaser (56e9c238)

Full Changelog: 1.3.2...1.4.0

_{Published with dotnet-releaser}

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