fix(deps): update dependency @modelcontextprotocol/sdk to v1.9.0

Author: renovate[bot]

package.json

@@ -36,7 +36,7 @@
 },
 "homepage": "https://github.com/spences10/mcp-svelte-docs#readme",
 "dependencies": {
-"@modelcontextprotocol/sdk": "1.4.1"
+"@modelcontextprotocol/sdk": "1.9.0"
 },
 "devDependencies": {
 "@changesets/cli": "^2.27.11",