Bump ModelContextProtocol.Core from 2.1.0 to 2.2.0

[dependabot]

Pinned ModelContextProtocol.Core at 2.2.0.

Release notes

Sourced from ModelContextProtocol.Core's releases.

2.2.0

This release adds hybrid stateful/stateless HTTP serving so clients using the 2025-11-25 and 2026-07-28 protocol revisions can share an endpoint, and fixes a malformed header-decoding edge case.

What's Changed

• Add HttpServerSessionMode for hybrid stateful/stateless HTTP serving #​1796 by @​saicharanpardhu (co-authored by @​Copilot @​jeffhandley)
• Fix McpHeaderEncoder.DecodeValue throwing on the degenerate base64 wrapper #​1805 by @​latent-9

Test Improvements

• Fix duplicated word in test comment #​1809 by @​latent-9

Repository Infrastructure Updates

• Enable package validation for the MCP extension packages #​1793 by @​jeffhandley (co-authored by @​Copilot)
• Add a release-manager agent that orchestrates the release skills #​1794 by @​jeffhandley (co-authored by @​Copilot)
• Bump Anthropic from 12.39.0 to 12.40.0 #​1808
• Bump @​hono/node-server from 1.19.14 to 2.1.0 in the npm_and_yarn group across 1 directory #​1812
• Fix dead relative link to versioning docs in bump-version skill #​1807 by @​latent-9

Acknowledgements

• @​latent-9 made their first contribution in #​1807
• @​saicharanpardhu made their first contribution in #​1796
• @​saicharanpardhu submitted issue #​1777 (resolved by #​1796)
• @​jeffhandley @​tarekgh @​halter73 reviewed pull requests

Full Changelog: modelcontextprotocol/csharp-sdk@v2.1.0...v2.2.0

[!NOTE]
These release notes were drafted with GitHub Copilot and reviewed before publishing.

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