Bump partial markdown parser

Author: blove

package-lock.json

@@ -113,7 +113,7 @@
     "@angular/platform-browser": "~21.1.0",
     "@angular/router": "~21.1.0",
     "@cacheplane/partial-json": "^0.1.1",
-    "@cacheplane/partial-markdown": "^0.5.5",
+    "@cacheplane/partial-markdown": "^0.5.6",
     "@langchain/core": "^1.1.33",
     "@langchain/langgraph-sdk": "^1.7.4",
     "@neondatabase/serverless": "^0.10.0",