fixes & dep updates

Author: raghur

package.json

@@ -18,10 +18,10 @@
     "mermaid-filter": "index.js"
   },
   "dependencies": {
-    "@mermaid-js/mermaid-cli": "^8.4.8",
+    "@mermaid-js/mermaid-cli": "^8.8.0",
     "imgur": "^0.3.1",
     "lodash": "^4.17.13",
-    "mermaid": "^8.4.8",
+    "mermaid": "^8.8.0",
     "pandoc-filter": "^0.1.3",
     "sanitize-filename": "1.6.1",
     "minimist": ">=0.2.1",