Merge pull request #53 from heroku/dependabot/pip/fastapi-0.120.4

Bump fastapi from 0.120.0 to 0.120.4

Author: joshwlewis

requirements.txt

@@ -1,5 +1,5 @@
 mcp[client,server]==1.20.0
-fastapi==0.120.0
+fastapi==0.121.0
 uvicorn==0.38.0
 python-dotenv==1.2.1
 mando==0.8.2