Build(deps): Bump mistune from 3.2.1 to 3.3.0

[dependabot]

Bumps mistune from 3.2.1 to 3.3.0.

Release notes

Sourced from mistune's releases.

v3.3.0

   🐞 Bug Fixes

• Resolve O(n^2) DoS in parse_link_text (CWE-400)  -  by bhanugoudm041 (b6b49)
• Resolve O(n^2) DoS in parse_link_text (CWE-400)-Type handling/testing done  -  by bhanugoudm041 (b3af8)
• block: Avoid quadratic ref link scans  -  by @​lepture (2b04d)
• cli: Add entrypoint and utf-8 output  -  by @​lepture (2f244)
• directives: Constrain include targets  -  by @​lepture (1bef3)
• formatting: Avoid quadratic marker scans  -  by @​lepture (96d0f)
• image: Validate figure width option  -  by @​lepture (e3e51)
• inline: Avoid bracket parsing DoS  -  by @​lepture (25f25)
• math: Reject currency patterns and cross-line matches in inline math  -  by @​geopanther (566e1)
• math: Support display and backtick math  -  by @​lepture (1141e)
• renderer: Render plugin list and table nodes  -  by @​lepture (614b0)
• renderer: Block encoded unsafe URL schemes  -  by @​lepture (c7101)
• toc: Avoid generated id collisions  -  by @​lepture (c4093)

   🏎 Performance

• Improve performance  -  by @​lepture (bf95c)

    View changes on GitHub

Changelog

Sourced from mistune's changelog.

Version 3.3.0

Released on Jun 21, 2026

• Improve CommonMark compatibility and parser performance.
• Add command line entrypoint with UTF-8 output.
• Support display and backtick math.
• Render plugin list and table nodes in Markdown renderer.
• Escape leading block markers in Markdown renderer.
• Fix RST renderer for block quotes nested in lists.
• Avoid generated heading ID collisions in TOC.
• Harden URL, image, figure, and include directive handling.
• Fix quadratic scans in inline links, reference links, and formatting markers.
• Fix math escaping, currency pattern matching, and cross-line matching.

Commits

• 15c3b79 chore: release 3.3.0
• bdc01ad tests: increase run time on pypy
• 7cf1814 tests: increase run time for pypy
• 6dfdc3d tests: add more tests
• 17c50f6 chore: fix mypy issues
• 63abe4b chore: use ruff check and format
• e6c1b18 chore: resolve mypy issues
• dcf8902 test(math): cover escaped math output
• c4093c4 fix(toc): avoid generated id collisions
• e3e51de fix(image): validate figure width option
• Additional commits viewable in compare view

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Note

Low Risk
Scope is limited to uv.lock; no chainladder runtime code changes, and the upgrade addresses known parsing DoS issues rather than introducing new app logic.

Overview
Updates the locked mistune dependency from 3.2.1 to 3.3.0 in uv.lock only (no application or pyproject.toml changes). mistune is pulled in transitively for the docs/notebook stack (e.g. via nbconvert).

The new release mainly hardens markdown parsing (fixes for quadratic-time link/reference/formatting paths, safer URL/include handling) and improves parser performance and CommonMark behavior—relevant wherever notebooks or markdown are rendered in CI or docs builds.

^{Reviewed by Cursor Bugbot for commit fc6ac97. Bugbot is set up for automated code reviews on this repo. Configure here.}

[github-actions]

Pyright Type Completeness

View the full pyright --verifytypes output for this commit

Project (full chainladder package, at this PR's head): 14.6% of exported symbols fully typed (185 / 1271)

	Known	Ambiguous	Unknown	Total
Project (head)	185	106	980	1271

Other symbols referenced but not exported by chainladder: 13

	Known	Ambiguous	Unknown	Total
Other (head)	3	1	9	13

Symbols without documentation:

• Functions without docstring: 313
• Functions without default param: 0
• Classes without docstring: 10

Patch (exported symbols added or changed by this PR): no exported symbol type-completeness changes detected.