Bump mcp from 1.10.1 to 1.23.0 in /.circleci (#17363)

Bumps [mcp](https://github.com/modelcontextprotocol/python-sdk) from 1.10.1 to 1.23.0.
- [Release notes](https://github.com/modelcontextprotocol/python-sdk/releases)
- [Changelog](https://github.com/modelcontextprotocol/python-sdk/blob/main/RELEASE.md)
- [Commits](https://github.com/modelcontextprotocol/python-sdk/compare/v1.10.1...v1.23.0)

---
updated-dependencies:
- dependency-name: mcp
  dependency-version: 1.23.0
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.circleci/requirements.txt

@@ -13,7 +13,7 @@ google-cloud-aiplatform==1.43.0
 google-cloud-iam==2.19.1
 fastapi-sso==0.16.0 
 uvloop==0.21.0
-mcp==1.10.1    # for MCP server  
+mcp==1.23.0    # for MCP server  
 semantic_router==0.1.10 # for auto-routing with litellm
 fastuuid==0.12.0
 responses==0.25.7  # for proxy client tests