chore: bump ext-apps to 1.7.4 (#685)

* chore: bump ext-apps to 1.7.4

* fix: resolve all npm audit vulnerabilities

- Remove unused vitest devDependency from basic-host (critical advisory,
  package was never referenced by any test or config)
- systeminformation ^5.31.5 -> ^5.31.6 (command injection, GHSA-hvx9-hwr7-wjj9)
- Lockfile-only bumps: devalue 5.8.1, fast-uri 3.1.2, hono 4.12.23,
  ip-address 10.2.0, express-rate-limit 8.5.2, postcss 8.5.15, qs 6.15.2,
  svelte 5.56.1

npm audit now reports 0 vulnerabilities.

examples/basic-server-preact/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@modelcontextprotocol/server-basic-preact",
-  "version": "1.7.3",
+  "version": "1.7.4",
   "type": "module",
   "description": "Basic MCP App Server example using Preact",
   "repository": {