chore(release): 18.0.4 [skip ci]

## [18.0.4](https://github.com/markedjs/marked/compare/v18.0.3...v18.0.4) (2026-05-19)

### Bug Fixes

* cache list indentation regexes ([#3969](https://github.com/markedjs/marked/issues/3969)) ([a37983f](https://github.com/markedjs/marked/commit/a37983f188d697fe98d350554dc95c49eaac6edd))
* fix cli not reading stdin ([#3967](https://github.com/markedjs/marked/issues/3967)) ([11adb69](https://github.com/markedjs/marked/commit/11adb697eeee2b0fa6da3a38d5146626347592dc))