Bump async from 2.6.4 to 3.2.4

Bumps [async](https://github.com/caolan/async) from 2.6.4 to 3.2.4.
- [Release notes](https://github.com/caolan/async/releases)
- [Changelog](https://github.com/caolan/async/blob/master/CHANGELOG.md)
- [Commits](caolan/async@v2.6.4...v3.2.4)

---
updated-dependencies:
- dependency-name: async
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -34,7 +34,7 @@
     "node": ">=10"
   },
   "dependencies": {
-    "async": "^2.6.1",
+    "async": "^3.2.4",
     "commander": "^2.18.0",
     "email-addresses": "^5.0.0",
     "filenamify": "^4.3.0",