Bump mcp from 1.29.1 to 2.1.0

Bumps [mcp](https://github.com/modelcontextprotocol/python-sdk) from 1.29.1 to 2.1.0.
- [Release notes](https://github.com/modelcontextprotocol/python-sdk/releases)
- [Changelog](https://github.com/modelcontextprotocol/python-sdk/blob/main/RELEASE.md)
- [Commits](modelcontextprotocol/python-sdk@v1.29.1...v2.1.0)

---
updated-dependencies:
- dependency-name: mcp
  dependency-version: 2.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -36,7 +36,7 @@ compat = ["six>=1.17.0"]
 ai = [
   "httpx==0.28.1",
   "langchain>=1.3.15",
-  "mcp>=1.28.1,<2.0.0",
+  "mcp>=1.28.1,<3.0.0",
   "pydantic>=2.13.4",
 ]
 anthropic = ["splunk-sdk[ai]>=3.0.0", "langchain-anthropic>=1.5.6"]