Bump @modelcontextprotocol/sdk from 1.25.2 to 1.26.0 in /test/mcp (#292929)

Bumps [@modelcontextprotocol/sdk](https://github.com/modelcontextprotocol/typescript-sdk) from 1.25.2 to 1.26.0.
- [Release notes](https://github.com/modelcontextprotocol/typescript-sdk/releases)
- [Commits](https://github.com/modelcontextprotocol/typescript-sdk/compare/v1.25.2...v1.26.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

test/mcp/package.json

@@ -12,7 +12,7 @@
     "start-stdio": "echo 'Starting vscode-automation-mcp... For customization and troubleshooting, see ./test/mcp/README.md' && npm ci && npm run -s compile && node ./out/stdio.js"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "1.25.2",
+    "@modelcontextprotocol/sdk": "1.26.0",
     "minimist": "^1.2.8",
     "ncp": "^2.0.0",
     "node-fetch": "^2.6.7"