deps: Update dependency myst-parser to >=5.1.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
myst-parser	feature-docs	minor	>=5.0.0 → >=5.1.0

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Release Notes

ExecutableBookProject/MyST-Parser (myst-parser)

v5.1.0

✨ New Features

• ✨ Add "alert" syntax extension for GFM alerts (e.g. > [!NOTE]), see by gh-user:chrisjsewell in gh-pr:1128
• ✨ Add "gfm_autolink" syntax extension for GFM autolinks, see by gh-user:chrisjsewell in gh-pr:1128
• ✨ Add myst_strikethrough_single_tilde config option to allow single tilde (~) for strikethrough by gh-user:chrisjsewell in gh-pr:1128
• ✨ Add myst_colon_fence_exact_match config option to require the closing colon fence to have exactly the same number of colons as the opening, see by gh-user:chrisjsewell in gh-pr:1128

👌 Improvements

• 👌 Update myst_gfm_only mode to use the unified gfm_plugin, which now includes GFM autolinks, alerts, and improved strikethrough/tasklist handling by gh-user:chrisjsewell in gh-pr:1128
• 👌 Improve MathJax 4 compatibility for Sphinx 9 by gh-user:chrisjsewell in gh-pr:1110
• 👌 Stop directive-option parsing at colon fences, fixing nested colon fence directives by gh-user:chrisjsewell in gh-pr:1133

🐛 Bug Fixes

• 🐛 Use docname instead of source path in warning locations by gh-user:chrisjsewell in gh-pr:1114
• 🐛 Correctly encode & in Markdown URLs by not HTML-escaping refuri by gh-user:chrisjsewell in gh-pr:1126
• 🐛 Fix RemovedInSphinx10Warning for inventory item iteration by gh-user:chrisjsewell in gh-pr:1129
• 🐛 Pin mdit-py-plugins>=0.6.1 for nested field list fix by gh-user:chrisjsewell in gh-pr:1134

⬆️ Dependency Upgrades

• ⬆️ Upgrade to markdown-it-py~=4.2 and mdit-py-plugins~=0.6 by gh-user:chrisjsewell in gh-pr:1128
• ⬆️ Update pygments requirement from <2.20 to <2.21 by gh-user:chrisjsewell in gh-pr:1117

Full Changelog: v5.0.0...v5.1.0

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