fix(deps): update dependency mcp to >=1.26.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
mcp	>=1.25.0 → >=1.26.0

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Release Notes

modelcontextprotocol/python-sdk (mcp)

v1.26.0

Compare Source

What's Changed

• ci: add all-green job to pull-request-checks workflow by @​maxisbey in #​1929
• Backport: Support for Resource and ResourceTemplate metadata by @​maxisbey in #​1928
• [v1.x] fix: return HTTP 404 for unknown session IDs instead of 400 by @​LucaButBoring in #​1945

Full Changelog: modelcontextprotocol/python-sdk@v1.25.0...v1.26.0

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[claude]

PR Review: Update mcp to >=1.26.0

Summary

This is a routine dependency update from Renovate that bumps the mcp package from >=1.25.0 to >=1.26.0.

Analysis

Changes in mcp 1.26.0:

• Support for Resource and ResourceTemplate metadata (backported)
• HTTP 404 for unknown session IDs (was 400)
• CI improvements

Compatibility Assessment:
✅ No breaking changes detected

The codebase uses the following MCP imports:

• ClientSession, sse_client, streamable_http_client - client functionality
• McpError - exception handling
• CallToolResult, ListToolsResult, Tool - type definitions
• FastMCP, TextContent - server functionality

None of these are affected by the changes in 1.26.0. The new features are additive (Resource/ResourceTemplate metadata support) and the HTTP status code change only affects HTTP transport error handling, which doesn't impact the current usage patterns.

Recommendation

✅ Approve and merge

This is a safe, non-breaking update that brings:

• Better error handling (404 vs 400 for unknown sessions)
• New optional features for Resource metadata
• Bug fixes and improvements

No code changes required in the mcp-optimizer codebase.