Bump the uv group across 2 directories with 1 update

Bumps the uv group with 1 update in the /mcp-client-python directory: [mcp](https://github.com/modelcontextprotocol/python-sdk).
Bumps the uv group with 1 update in the /weather-server-python directory: [mcp](https://github.com/modelcontextprotocol/python-sdk).


Updates `mcp` from 1.27.2 to 1.28.1
- [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/v1.27.2...v1.28.1)

Updates `mcp` from 1.27.2 to 1.28.1
- [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/v1.27.2...v1.28.1)

---
updated-dependencies:
- dependency-name: mcp
  dependency-version: 1.28.1
  dependency-type: direct:production
  dependency-group: uv
- dependency-name: mcp
  dependency-version: 1.28.1
  dependency-type: indirect
  dependency-group: uv
...

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

mcp-client-python/pyproject.toml

@@ -6,7 +6,7 @@ readme = "README.md"
 requires-python = ">=3.10"
 dependencies = [
     "anthropic>=0.87.0",
-    "mcp>=1.27.2",
+    "mcp>=1.28.1",
     "python-dotenv>=1.2.2",
 ]