chore(deps): bump mcp from 1.20.0 to 1.23.0 in /e2e_tests/python

Bumps [mcp](https://github.com/modelcontextprotocol/python-sdk) from 1.20.0 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@v1.20.0...v1.23.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

e2e_tests/python/requirements.txt

@@ -1,5 +1,5 @@
 strands-agents==1.15.0
-mcp==1.20.0
+mcp==1.23.0
 uvicorn==0.38.0
 boto3==1.40.67