chore(deps): bump mermaid from 11.14.0 to 11.15.0 (#420)

Bumps [mermaid](https://github.com/mermaid-js/mermaid) from 11.14.0 to 11.15.0.
- [Release notes](https://github.com/mermaid-js/mermaid/releases)
- [Commits](https://github.com/mermaid-js/mermaid/compare/mermaid@11.14.0...mermaid@11.15.0)

---
updated-dependencies:
- dependency-name: mermaid
  dependency-version: 11.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

bun.lock

@@ -15,7 +15,7 @@
     "fumadocs-mdx": "15.0.3",
     "fumadocs-ui": "16.8.10",
     "lucide-react": "^1.14.0",
-    "mermaid": "^11.14.0",
+    "mermaid": "^11.15.0",
     "next": "16.2.6",
     "next-themes": "^0.4.6",
     "react": "^19.2.5",