Update dependency markdown-it to v14.2.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
markdown-it	14.1.1 → 14.2.0

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Release Notes

markdown-it/markdown-it (markdown-it)

v14.2.0

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Added

• isPunctCharCode to utilities.

Fixed

• Don't end HTML comment blocks on a blank line, #​1155.
• Properly recognize astral chars (surrogates) in delimiter scans for
  emphasis-like markers, #​1072. Big thanks to @​tats-u for his global efforts
  with improving CJK support.
• Preserve unicode whitespaces when trimm headings/paragraphs, #​1074.
• More strict entities decode to avoid false positives ;, #​1096.
• Restore block parser state on fail in lheading rule, #​1131.

Security

• Fixed poor smartquotes perfomance on > 70k quotes in single block
• Bumped linkify-it to 5.0.1 with fixed potential perfomance issues.

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