Update dependency mermaid to v9.4.0 (#218)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -32,7 +32,7 @@
     "lozad": "1.16.0",
     "mathjax": "3.2.2",
     "medium-zoom": "1.0.8",
-    "mermaid": "9.3.0",
+    "mermaid": "9.4.0",
     "pace-js": "1.2.4",
     "pangu": "4.0.7",
     "pdfobject": "2.2.8",