Bump waitress from 1.4.1 to 1.4.2
Bump waitress from 1.4.1 to 1.4.2

Bumps [waitress](https://github.com/Pylons/waitress) from 1.4.1 to 1.4.2.
- [Release notes](https://github.com/Pylons/waitress/releases)
- [Changelog](https://github.com/Pylons/waitress/blob/master/CHANGES.txt)
- [Commits](https://github.com/Pylons/waitress/compare/v1.4.1...v1.4.2)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
mozilla-services/shavar,mozilla-services/shavar