meta: bump rolldown from 1.0.0-beta.28 to 1.0.0-beta.29

Bumps [rolldown](https://github.com/rolldown/rolldown/tree/HEAD/packages/rolldown) from 1.0.0-beta.28 to 1.0.0-beta.29.
- [Release notes](https://github.com/rolldown/rolldown/releases)
- [Changelog](https://github.com/rolldown/rolldown/blob/main/CHANGELOG.md)
- [Commits](https://github.com/rolldown/rolldown/commits/v1.0.0-beta.29/packages/rolldown)

---
updated-dependencies:
- dependency-name: rolldown
  dependency-version: 1.0.0-beta.29
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -70,7 +70,7 @@
     "remark-parse": "^11.0.0",
     "remark-rehype": "^11.1.2",
     "remark-stringify": "^11.0.0",
-    "rolldown": "^1.0.0-beta.28",
+    "rolldown": "^1.0.0-beta.29",
     "semver": "^7.7.2",
     "shiki": "^3.8.0",
     "unified": "^11.0.5",