Bump httpunit from 1.7.2 to 1.7.3
Bump httpunit from 1.7.2 to 1.7.3

Bumps [httpunit](https://github.com/russgold/httpunit) from 1.7.2 to 1.7.3.
- [Release notes](https://github.com/russgold/httpunit/releases)
- [Changelog](https://github.com/russgold/httpunit/blob/master/doc/release_notes.html)
- [Commits](https://github.com/russgold/httpunit/commits/httpunit-1.7.3)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
groupby/api-java