build(deps): bump mcp from 1.12.4 to 1.23.0 in /orchestrator

Bumps [mcp](https://github.com/modelcontextprotocol/python-sdk) from 1.12.4 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](modelcontextprotocol/python-sdk@v1.12.4...v1.23.0)

---
updated-dependencies:
- dependency-name: mcp
  dependency-version: 1.23.0
  dependency-type: indirect
...

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Author: dependabot[bot]