Updated AWS CDK version from 2.151.0 to 2.1031.2 in setup script. (#31)

The CLI tool and the version from the python environment was causing conflicts as noted in https://github.com/Sage-Bionetworks-IT/synapse-mcp-infra/pull/1/files#r2520139888

Author: BryanFauble

tools/setup.sh

@@ -4,7 +4,7 @@
 set -euxo pipefail
 
 # Install Node.js dependencies
-npm install -g aws-cdk@2.151.0
+npm install -g aws-cdk@2.1031.2
 
 # Install Python dependencies
 python -m venv .venv