Bump mermaid from 9.1.5 to 9.3.0 (#752)

CHangelog on https://github.com/mermaid-js/mermaid/releases

### Prerequisites

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- [ ] This pull request fixes a bug.
- [ ] This pull request adds a feature.
- [ ] This pull request introduces breaking change.

### Description

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### Issues Resolved

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### Checklist

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#### General

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- [ ] Explain why and how the changes were necessary and implemented
respectively
- [ ] Reference issue with `#<ISSUE_NO>` if applicable

#### Resources

- [ ] If you have changed any SCSS code, run `make release` to
regenerate all CSS files

#### Contributors

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