chore: update pin for awslabs-elasticache

Author: mcp-registry-bot

servers/awslabs-elasticache/server.yaml

@@ -11,7 +11,7 @@ about:
   icon: https://avatars.githubusercontent.com/u/3299148?v=4
 source:
   project: https://github.com/awslabs/mcp
-  commit: 7bace1f81455088b6690a44e99cabb602259ddf7
+  commit: 20e7472ba2174045f54ffd7ea8a0f5d91aae57db
   directory: src/elasticache-mcp-server
 config:
   description: Configure AWS credentials for ElastiCache access