deps(deps): bump mdex from 0.12.2 to 0.13.0

[dependabot]

Bumps mdex from 0.12.2 to 0.13.0.

Release notes

Sourced from mdex's releases.

v0.13.0

0.13.0 (2026-06-09)

⚠ BREAKING CHANGES

• optional lumis (#362)

Documentation

• fix examples (94a879d)

v0.12.5

0.12.5 (2026-06-08)

Features

• mdex_native with syntect build (#359) (42728ee)

v0.12.4

0.12.4 (2026-06-06)

Features

• add syntect engine on syntax highlighting (#358) (7aa8a0a)
• support :engine in syntax highlighter (#357) (9a18f3f)

Bug Fixes

• disable syntax highlight with syntax_highlight: false (#355) (c5d28bb)

Documentation

• improve syntax highlight example (cf5f5a6)
• syntax highlight options in example (#356) (16c555a)

v0.12.3

0.12.3 (2026-06-05)

Features

• extract mdex native into mdex_native (#351) (6ed94d9)

... (truncated)

Changelog

Sourced from mdex's changelog.

0.13.0 (2026-06-09)

⚠ BREAKING CHANGES

• optional lumis and disable syntax highlighting by default (#362)

Syntax Highlighting Migration Guide

Syntax highlighting is no longer enabled by default. If you use Lumis, add it in deps and opt in before compiling dependencies:

# mix.exs
defp deps do
  [
    {:lumis, "~> 0.1"}
  ]
end
config/config.exs
import Config
config :mdex_native, syntax_highlighter: :lumis

The old Lumis-only :syntax_highlight API still works but is no longer recommended:

MDEx.to_html!(markdown,
  syntax_highlight: [formatter: {:html_inline, theme: "github_light"}]
)

For new code, prefer engine: :lumis and move Lumis options under opts::

- MDEx.to_html!(markdown,
-   syntax_highlight: [formatter: {:html_inline, theme: "github_light"}]
- )
+ MDEx.to_html!(markdown,
+   syntax_highlight: [
+     engine: :lumis,
+     opts: [formatter: {:html_inline, theme: "github_light"}]
+   ]
+ )

For ~MD, pass the same options to use MDEx, and the old Lumis-only shape still works:

- use MDEx,
</tr></table> 

... (truncated)

Commits

• 1e0b799 chore(main): release 0.13.0 (#361)
• 06d8d81 feat!: optional lumis (#362)
• 94a879d docs: fix examples
• 9ea25d8 fix hexdocs shield
• 538fd6e chore(main): release 0.12.5 (#360)
• 42728ee feat: mdex_native with syntect build (#359)
• 8d86269 chore(main): release 0.12.4 (#354)
• 7aa8a0a feat: add syntect engine on syntax highlighting (#358)
• 9a18f3f feat: support :engine in syntax highlighter (#357)
• 79eee5b Enable include-commit-authors in release config
• Additional commits viewable in compare view

[dependabot]

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[mikehostetler]

@dependabot rebase