add mermaid.js support

.forgejo/workflows/deploy.yml

@@ -15,15 +15,11 @@ jobs:
           fetch-depth: 0
       - name: Install latest mdbook
         run: |
-          apt-get update -qq
-          apt-get install -qq jq
-          tag="$(curl 'https://api.github.com/repos/rust-lang/mdbook/releases/latest' | jq -r '.tag_name')"
-          url="https://github.com/rust-lang/mdbook/releases/download/${tag}/mdbook-${tag}-x86_64-unknown-linux-gnu.tar.gz"
-          mkdir mdbook
-          curl -sSL "$url" | tar -xz --directory=./mdbook
-          echo "`pwd`"/mdbook >> $GITHUB_PATH
+          scripts/install_deps.sh
+          echo "`pwd`"/bin >> $GITHUB_PATH
       - name: Build Book
         run: |
+          mdbook-mermaid install .
           mdbook build
       - name: Push to rendered branch
         run: |