build(deps-dev): bump @types/node from 20.19.39 to 25.6.0

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 20.19.39 to 25.6.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-version: 25.6.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -126,7 +126,7 @@
   "devDependencies": {
     "@eslint/js": "^9.39.2",
     "@opencode-ai/plugin": "^1.0.0",
-    "@types/node": "^20.19.24",
+    "@types/node": "^25.6.0",
     "c8": "^11.0.0",
     "eslint": "^9.39.2",
     "globals": "^17.4.0",