Merge pull request #51 from heroku/dependabot/pip/mcp-clientserver--1.18.0

Bump mcp[client,server] from 1.16.0 to 1.18.0

Author: jttyeung

requirements.txt

@@ -1,4 +1,4 @@
-mcp[client,server]==1.16.0
+mcp[client,server]==1.18.0
 fastapi==0.116.1
 uvicorn==0.37.0
 python-dotenv==1.1.1