Bump @modelcontextprotocol/sdk

Bumps the npm_and_yarn group with 1 update in the / directory: [@modelcontextprotocol/sdk](https://github.com/modelcontextprotocol/typescript-sdk).


Updates `@modelcontextprotocol/sdk` from 1.25.3 to 1.26.0
- [Release notes](https://github.com/modelcontextprotocol/typescript-sdk/releases)
- [Commits](modelcontextprotocol/typescript-sdk@v1.25.3...v1.26.0)

---
updated-dependencies:
- dependency-name: "@modelcontextprotocol/sdk"
  dependency-version: 1.26.0
  dependency-type: direct:production
  dependency-group: npm_and_yarn
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -3,7 +3,7 @@
   "description": "Pinned npm dependencies for MCP C# SDK integration and conformance tests",
   "dependencies": {
     "@modelcontextprotocol/conformance": "0.1.10",
-    "@modelcontextprotocol/sdk": "1.25.3",
+    "@modelcontextprotocol/sdk": "1.26.0",
     "@modelcontextprotocol/server-everything": "2025.12.18",
     "@modelcontextprotocol/server-memory": "2026.1.26"
   }