Bump rustler from 0.16.0 to 0.17.1
Bump rustler from 0.16.0 to 0.17.1

Bumps [rustler](https://github.com/hansihe/Rustler) from 0.16.0 to 0.17.1.
- [Release notes](https://github.com/hansihe/Rustler/releases)
- [Changelog](https://github.com/hansihe/rustler/blob/master/RELEASE_CHECKLIST.md)
- [Commits](https://github.com/hansihe/Rustler/compare/0.16.0...rustler-0.17.1)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
elitau/pact_elixir