build(deps-dev): bump fern-api from 4.38.1 to 4.43.1 (#44)

Bumps [fern-api](https://github.com/fern-api/fern/tree/HEAD/packages/cli/cli) from 4.38.1 to 4.43.1.
- [Release notes](https://github.com/fern-api/fern/releases)
- [Commits](https://github.com/fern-api/fern/commits/4.43.1/packages/cli/cli)

---
updated-dependencies:
- dependency-name: fern-api
  dependency-version: 4.43.1
  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

@@ -6,7 +6,7 @@
     "clean": "rm -rf sdks/typescript/dist"
   },
   "devDependencies": {
-    "fern-api": "4.38.1",
+    "fern-api": "4.43.1",
     "@types/node": "25.5.0",
     "typescript": "5.9.3"
   }