build(deps-dev): bump @types/node from 25.5.2 to 25.6.0 (#61)

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 25.5.2 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-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

fern/package.json

@@ -7,7 +7,7 @@
   },
   "devDependencies": {
     "fern-api": "4.67.0",
-    "@types/node": "25.5.2",
+    "@types/node": "25.6.0",
     "typescript": "5.9.3"
   }
 }