build(deps): bump pulldown-cmark from 0.13.3 to 0.13.4

Bumps [pulldown-cmark](https://github.com/raphlinus/pulldown-cmark) from 0.13.3 to 0.13.4.
- [Release notes](https://github.com/raphlinus/pulldown-cmark/releases)
- [Commits](pulldown-cmark/pulldown-cmark@v0.13.3...v0.13.4)

---
updated-dependencies:
- dependency-name: pulldown-cmark
  dependency-version: 0.13.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Cargo.lock

@@ -15,7 +15,7 @@ is-macro = "0.3.6"
 itertools = "0.14.0"
 ordered-float = { version = "5.3.0", features = ["serde"] }
 paste = "1.0.14"
-pulldown-cmark = "0.13.3"
+pulldown-cmark = "0.13.4"
 serde = { version = "1.0.228", features = ["derive"] }
 serde_json = "1.0.149"
 smallvec = { version = "1.15.1", features = ["serde"] }