📌 Bump mermaid from 11.5.0 to 11.6.0

Bumps [mermaid](https://github.com/mermaid-js/mermaid) from 11.5.0 to 11.6.0.
- [Release notes](https://github.com/mermaid-js/mermaid/releases)
- [Changelog](https://github.com/mermaid-js/mermaid/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/mermaid-js/mermaid/compare/mermaid@11.5.0...mermaid@11.6.0)

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

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

package.json

@@ -40,7 +40,7 @@
     "jquery": "^3.7.1",
     "katex": "^0.16.21",
     "lite-youtube-embed": "^0.3.3",
-    "mermaid": "^11.5.0",
+    "mermaid": "^11.6.0",
     "packery": "^3.0.0",
     "prettier": "^3.5.3",
     "prettier-plugin-go-template": "^0.0.15",