chore(deps): bump @modelcontextprotocol/sdk from 1.19.1 to 1.20.0

Bumps [@modelcontextprotocol/sdk](https://github.com/modelcontextprotocol/typescript-sdk) from 1.19.1 to 1.20.0.
- [Release notes](https://github.com/modelcontextprotocol/typescript-sdk/releases)
- [Commits](https://github.com/modelcontextprotocol/typescript-sdk/commits/1.20.0)

---
updated-dependencies:
- dependency-name: "@modelcontextprotocol/sdk"
  dependency-version: 1.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -44,7 +44,7 @@
     "vitest": "^3.2.4"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.19.1",
+    "@modelcontextprotocol/sdk": "^1.20.0",
     "@types/express": "^5.0.3",
     "express": "^5.1.0",
     "pino": "^9.0.0",