chore(deps): bump rehype-github-alerts from 3.0.0 to 4.2.0

Bumps [rehype-github-alerts](https://github.com/chrisweb/rehype-github-alerts) from 3.0.0 to 4.2.0.
- [Release notes](https://github.com/chrisweb/rehype-github-alerts/releases)
- [Commits](chrisweb/rehype-github-alerts@3.0.0...4.2.0)

---
updated-dependencies:
- dependency-name: rehype-github-alerts
  dependency-version: 4.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -69,7 +69,7 @@
     "react-dom": "^19.0.0",
     "react-icons": "^5.5.0",
     "react-mcu": "^1.1.0",
-    "rehype-github-alerts": "^3.0.0",
+    "rehype-github-alerts": "^4.2.0",
     "rehype-prism-plus": "^2.0.0",
     "remark-gfm": "^4.0.1",
     "sanitize-html": "^2.17.0",