Update dependency markdown-it to v14

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
markdown-it	^13.0.0 -> ^14.0.0
@types/markdown-it (source)	13.0.9 -> 14.1.2

---

Release Notes

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

v14.1.0

Compare Source

Changed

• Updated CM spec compatibility to 0.31.2, #​1009.

Fixed

• Fixed quadratic complexity when parsing references, #​996.
• Fixed quadratic output size with pathological user input in tables, #​1000.

v14.0.0

Compare Source

Changed

• Drop ancient browsers support (use .fromCodePoint and other features).
• Rewrite to ESM (including all plugins/deps). CJS fallback still available.
  No signatures changed, except markdown-it-emoji plugin.
• Dropped dist/ folder from repo, build on package publish.
• Set punicode.js as external dependency.

Fixed

• Html tokens inside img alt are now rendered as their original text, #​896.
• Hardbreaks inside img alt are now rendered as newlines.

---

Configuration

📅 Schedule: Branch creation - "every weekend" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.