build(deps): bump gatsby-remark-mermaid from 2.1.0 to 3.0.1 in /docs

Bumps [gatsby-remark-mermaid](https://github.com/remcohaszing/gatsby-remark-mermaid) from 2.1.0 to 3.0.1.
- [Release notes](https://github.com/remcohaszing/gatsby-remark-mermaid/releases)
- [Commits](remcohaszing/gatsby-remark-mermaid@v2.1.0...v3.0.1)

---
updated-dependencies:
- dependency-name: gatsby-remark-mermaid
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]