upgrade mermaidjs to v8.9.0 (#305)

this fixes the following issue
https://github.com/mermaid-js/mermaid/issues/1836

the sha256sum of mermaid.min.js downloaded from the following link as on
2021-01-26 09:36:19 UTC

https://unpkg.com/mermaid@8.9.0/dist/mermaid.min.js

is

910e77c953c7417fd61148fc61b175624001bdd3c6e977e228fcb30607f7bd42
soper-book
Ayush Agarwal 2021-01-26 22:46:35 +05:30 committed by GitHub
parent c828c6660f
commit a12baf0e01
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 22 deletions

27
static/mermaid.min.js vendored

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