Bump async from 3.2.5 to 3.2.6 in /generator (#3194)

Bumps [async](https://github.com/caolan/async) from 3.2.5 to 3.2.6.
- [Release notes](https://github.com/caolan/async/releases)
- [Changelog](https://github.com/caolan/async/blob/master/CHANGELOG.md)
- [Commits](caolan/async@v3.2.5...v3.2.6)

---
updated-dependencies:
- dependency-name: async
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

generator/package-lock.json

@@ -28,7 +28,7 @@
     "@types/yargs": "^17.0.33",
     "@typescript-eslint/eslint-plugin": "^7.17.0",
     "@typescript-eslint/parser": "^7.18.0",
-    "async": "^3.2.5",
+    "async": "^3.2.6",
     "autorest": "^3.7.1",
     "colors": "^1.4.0",
     "eslint": "^8.57.0",