chore: bump ext-apps to 1.7.2 (#660)

No SDK API changes since 1.7.1.

Examples:
- pdf-server: switch pdf-lib to maintained @cantoo/pdf-lib fork (#651)
- bump example transitives to latest patches (#658)

examples/basic-host/package.json

@@ -1,7 +1,7 @@
 {
   "homepage": "https://github.com/modelcontextprotocol/ext-apps/tree/main/examples/basic-host",
   "name": "@modelcontextprotocol/ext-apps-basic-host",
-  "version": "1.7.1",
+  "version": "1.7.2",
   "type": "module",
   "scripts": {
     "build": "tsc --noEmit && concurrently \"cross-env INPUT=index.html vite build\" \"cross-env INPUT=sandbox.html vite build\"",