chore(deps)(deps): Bump pymdown-extensions from 10.5 to 10.21

[dependabot]

Bumps pymdown-extensions from 10.5 to 10.21.

Release notes

Sourced from pymdown-extensions's releases.

10.21

• NEW: Caption: Add support for specifying not only IDs but classes and arbitrary attributes. Initial work by @​joapuiib.
• FIX: MagicLink: Fix a matching pattern for Bitbucket repo.

10.20

• NEW: Quotes: New blockquotes extension added that uses a more modern approach when compared to Python Markdown's default. Quotes specifically will not group consecutive blockquotes together in the same lazy fashion that the default Python Markdown does which follows a more modern trend to how parsers these days handle block quotes.

  In addition, Quotes also provides an optional feature to enable specifying callouts/alerts in the style used by GitHub and Obsidian.

10.19.1

• FIX: Arithmatex: Fix issue where block $$ math used inline within a paragraph could result in nested math parsing.

10.19

• NEW: Emoji: Update Twemoji to use Unicode 16.
• NEW: Critic: Roll back view mode deprecation as some still like to use it, though further enhancements to this mode are not planned.

10.18

• NEW: Critic: view mode has been deprecated. To avoid warnings or future issues, explicitly set mode to either accept or reject. In the future, the new default will be accept and the view mode will be removed entirely.
• FIX: Block Admonition: important should have always been available as a default.

10.17.2

• FIX: Blocks: Blocks extensions will now better handle nesting of indented style Admonitions, Details, and Tabbed and other non-conflicting blocks.

10.17.1

• FIX: Fix an issue where Highlight can override another extension in the "registered" list in Python Markdown.

10.17

• NEW: Allow specifying static IDs in caption block headers via #id syntax.

10.6.1

10.16.1

• FIX: Inefficient regular expression pattern for figure caption numbers.

... (truncated)

Commits

• 6d92b68 Bump version
• baeca0e Docs: update JS deps
• bf2a237 Add classes and attributes to captions (#2844)
• 5c69e05 Fix bitbucket reference (#2835)
• fa4a066 Fix spelling
• a69f671 Update docs
• 1aa6f20 Ensure callouts always lowercases the first class (the alert type)
• 66f95d7 Docs: Update JS deps
• 44e4a12 Update readme
• e99fa9a Remove override for "back to top" button box shadow
• Additional commits viewable in compare view

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[dependabot]

A newer version of pymdown-extensions exists, but since this PR has been edited by someone other than Dependabot I haven't updated it. You'll get a PR for the updated version as normal once this PR is merged.

[evoludigit]

Superseded by #346 which consolidates all dependency bumps into a single PR.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.