Update Mermaid to 8.9.2

Keeps Category:Docs Site up to date with the latest improvements in Mermaid: https://mermaid-js.github.io/mermaid/#/

• Before: https://docs.gitlab.com/ee/development/architecture.html#component-diagram
• After: http://eread-update-mermaid-library.178.62.207.141.nip.io/ee/development/architecture.html#component-diagram