Bump async and newman in /azure

Bumps [async](https://github.com/caolan/async) to 3.2.3 and updates ancestor dependency [newman](https://github.com/postmanlabs/newman). These dependencies need to be updated together.


Updates `async` from 2.6.3 to 3.2.3
- [Release notes](https://github.com/caolan/async/releases)
- [Changelog](https://github.com/caolan/async/blob/master/CHANGELOG.md)
- [Commits](caolan/async@v2.6.3...v3.2.3)

Updates `newman` from 5.1.0 to 5.3.2
- [Release notes](https://github.com/postmanlabs/newman/releases)
- [Changelog](https://github.com/postmanlabs/newman/blob/develop/CHANGELOG.yaml)
- [Commits](postmanlabs/newman@v5.1.0...v5.3.2)

---
updated-dependencies:
- dependency-name: async
  dependency-type: indirect
- dependency-name: newman
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]