chore(deps): update markdown requirement from >=3.5 to >=3.10.3

[dependabot]

Updates the requirements on markdown to permit the latest version.

Release notes

Sourced from markdown's releases.

Release 3.10.3

Fixed

• Fix SetextHeaderProcessor regex to prevent mixed = and - chars in setext-style headers (#1606).
• Add AI Policy to Contributing Guide.
• Officially document all included extensions as being in maintenance mode.
• Link the Extension API documentation to the API Reference (#1612).

Changelog

Sourced from markdown's changelog.

[3.10.3] - 2026-07-30

Fixed

• Fix SetextHeaderProcessor regex to prevent mixed = and - chars in setext-style headers (#1606).
• Add AI Policy to Contributing Guide.
• Officially document all included extensions as being in maintenance mode.
• Link the Extension API documentation to the API Reference (#1612).

[3.10.2] - 2026-02-09

Fixed

• Fix a regression related to comment handling (#1590).
• More reliable fix for </ (#1593).

[3.10.1] - 2026-01-21

Fixed

• Ensure nested elements inside inline comments are properly unescaped (#1571).
• Make the docs build successfully with mkdocstrings-python 2.0 (#1575).
• Fix infinite loop when multiple bogus or unclosed HTML comments appear in input (#1578).
• Fix another infinite loop when handling bad comments (#1586).

[3.10.0] - 2025-11-03

Changed

• Officially support Python 3.14 and PyPy 3.11 and drop support for Python 3.9 and PyPy 3.9.

Fixed

• Fix an HTML comment parsing case in some Python versions that can cause an infinite loop (#1554).
• Revert the default behavior of USE_DEFINITION_ORDER (to True). The new behavior introduced in 3.9.0 is experimental and results are inconsistent. It should not have been made the default behavior (#1561).

[3.9.0] - 2025-09-04

Changed

• Footnotes are now ordered by the occurrence of their references in the document. A new configuration option for the footnotes extension, USE_DEFINITION_ORDER, has been added to support restoring the previous behavior of ordering footnotes by the occurrence of definitions (#1367).

Fixed

... (truncated)

Commits

• bb50627 Bump version to 3.10.3
• 8453df0 Update Extension API documentation
• 93ac448 Document that all extensions are in maintenance mode
• d38fd4a Create AI Policy
• ddead47 Prevent mixed =/- chars in Setext-style headings
• e7a0efb Bump version to 3.10.2
• 6301833 Document HTML sanitation policy
• 7f29f1a More reliable fix for </
• c438647 Fix regression of special comments
• e5fa5b8 Bump version to 3.10.1
• Additional commits viewable in compare view

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