chore(deps): bump @modelcontextprotocol/sdk

Bumps [@modelcontextprotocol/sdk](https://github.com/modelcontextprotocol/typescript-sdk) from 1.23.0 to 1.26.0.
- [Release notes](https://github.com/modelcontextprotocol/typescript-sdk/releases)
- [Commits](modelcontextprotocol/typescript-sdk@1.23.0...v1.26.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

packages/vscode-ide-companion/package.json

@@ -137,7 +137,7 @@
     "vitest": "3.2.4"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "1.23.0",
+    "@modelcontextprotocol/sdk": "1.26.0",
     "cors": "2.8.5",
     "express": "5.1.0",
     "zod": "3.25.76"