Bump comrak from 0.26.0 to 0.27.0

Bumps [comrak](https://github.com/kivikakk/comrak) from 0.26.0 to 0.27.0.
- [Release notes](https://github.com/kivikakk/comrak/releases)
- [Changelog](https://github.com/kivikakk/comrak/blob/main/changelog.txt)
- [Commits](https://github.com/kivikakk/comrak/commits)

---
updated-dependencies:
- dependency-name: comrak
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

ext/commonmarker/Cargo.toml

@@ -10,7 +10,7 @@ magnus = { version = "0.7", features = ["rb-sys"] }
 rb-sys = { version = "*", default-features = false, features = [
     "stable-api-compiled-fallback",
 ] }
-comrak = { version = "0.26", features = ["shortcodes"] }
+comrak = { version = "0.27", features = ["shortcodes"] }
 syntect = { version = "5.2", features = ["plist-load"] }
 typed-arena = "2.0"
 rctree = "0.6"