build(deps-dev): bump mcp from 0.8.0 to 0.9.0

[dependabot]

Bumps mcp from 0.8.0 to 0.9.0.

Release notes

Sourced from mcp's releases.

v0.9.0

Added

• MCP::Client::Stdio transport (#262)
• Progress notifications per MCP specification (#254)
• Automatic _meta parameter extraction support (#172)
• CORS and Accept wildcard support for browser-based MCP clients (#253)

Changed

• Use autoload to defer loading of unused subsystems (#255)
• Reduce release package size (#239)

Fixed

• Return 404 for invalid session ID in handle_regular_request (#257)
• Use mutex-protected session_exists? in handle_regular_request (#258)

Changelog

Sourced from mcp's changelog.

[0.9.0] - 2026-03-20

Added

• MCP::Client::Stdio transport (#262)
• Progress notifications per MCP specification (#254)
• Automatic _meta parameter extraction support (#172)
• CORS and Accept wildcard support for browser-based MCP clients (#253)

Changed

• Use autoload to defer loading of unused subsystems (#255)
• Reduce release package size (#239)

Fixed

• Return 404 for invalid session ID in handle_regular_request (#257)
• Use mutex-protected session_exists? in handle_regular_request (#258)

Commits

• 910d3ca Merge pull request #264 from koic/release_0_9_0
• 12922a6 Release 0.9.0
• 09b4e30 Merge pull request #262 from koic/stdio_client_transport
• 21eef8d Add MCP::Client::Stdio transport
• 283c7a4 Merge pull request #260 from koic/use_missing_session_id_response_helper_in_h...
• 75d03f3 Use missing_session_id_response method in handle_delete
• f4aab5c Merge pull request #258 from koic/use_mutex_protected_session_exists_predicate
• be1bbc2 Use mutex-protected session_exists? in handle_regular_request
• 8823bd3 Merge pull request #257 from koic/return_404_for_invalid_session_id
• cf1d578 Return 404 for invalid session ID in handle_regular_request
• Additional commits viewable in compare view

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