Bump mermaid from 8.3.1 to 9.1.2

Bumps [mermaid](https://github.com/knsv/mermaid) from 8.3.1 to 9.1.2.
- [Release notes](https://github.com/knsv/mermaid/releases)
- [Changelog](https://github.com/mermaid-js/mermaid/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/knsv/mermaid/commits/9.1.2)

---
updated-dependencies:
- dependency-name: mermaid
  dependency-type: direct:production
...

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Author: dependabot[bot]