build(deps-dev): bump mermaid from 11.7.0 to 11.9.0

Bumps [mermaid](https://github.com/mermaid-js/mermaid) from 11.7.0 to 11.9.0.
- [Release notes](https://github.com/mermaid-js/mermaid/releases)
- [Commits](https://github.com/mermaid-js/mermaid/compare/[email protected]@11.9.0)

---
updated-dependencies:
- dependency-name: mermaid
  dependency-version: 11.9.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -19,7 +19,7 @@
     "eslint": "9.33.0",
     "eslint-plugin-format": "1.0.1",
     "markdown-it-task-lists": "2.1.1",
-    "mermaid": "11.7.0",
+    "mermaid": "11.9.0",
     "vitepress": "1.6.3",
     "vitepress-plugin-mermaid": "2.0.17"
   }