chore(deps): bump @openzeppelin/contracts-mcp from 0.4.4 to 0.5.0

Bumps [@openzeppelin/contracts-mcp](https://github.com/OpenZeppelin/contracts-wizard) from 0.4.4 to 0.5.0.
- [Release notes](https://github.com/OpenZeppelin/contracts-wizard/releases)
- [Commits](https://github.com/OpenZeppelin/contracts-wizard/compare/@openzeppelin/contracts-mcp@0.4.4...@openzeppelin/contracts-mcp@0.5.0)

---
updated-dependencies:
- dependency-name: "@openzeppelin/contracts-mcp"
  dependency-version: 0.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

bun.lock

@@ -8,7 +8,7 @@
   },
   "dependencies": {
     "@next/third-parties": "^16.0.7",
-    "@openzeppelin/contracts-mcp": "^0.4.5",
+    "@openzeppelin/contracts-mcp": "^0.5.0",
     "mcp-handler": "^1.0.4",
     "next": "^16.0.7",
     "react": "^19.2.1",