Bump viem from 2.47.1 to 2.48.4 in /x402/server/node-typescript

Bumps [viem](https://github.com/wevm/viem) from 2.47.1 to 2.48.4.
- [Release notes](https://github.com/wevm/viem/releases)
- [Commits](https://github.com/wevm/viem/compare/viem@2.47.1...viem@2.48.4)

---
updated-dependencies:
- dependency-name: viem
  dependency-version: 2.48.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

x402/server/node-typescript/package.json

@@ -17,7 +17,7 @@
     "hono": "^4.11.7",
     "node-cache": "^5.1.2",
     "stripe": "^22.0.1",
-    "viem": "^2.45.1"
+    "viem": "^2.48.4"
   },
   "pnpm": {
     "onlyBuiltDependencies": [