Bump @types/bun from 1.3.6 to 1.3.9

Bumps [@types/bun](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/bun) from 1.3.6 to 1.3.9.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/bun)

---
updated-dependencies:
- dependency-name: "@types/bun"
  dependency-version: 1.3.9
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

bun/conformance/package.json

@@ -12,7 +12,7 @@
   },
   "type": "module",
   "devDependencies": {
-    "@types/bun": "^1.3.6",
+    "@types/bun": "^1.3.9",
     "@bufbuild/buf": "^1.66.0",
     "@bufbuild/protobuf": "2.11.0",
     "@bufbuild/protoc-gen-es": "2.11.0",