Update pdk requirement from ~> 1.17 to ~> 2.0
Update pdk requirement from ~> 1.17 to ~> 2.0

Updates the requirements on [pdk](https://github.com/puppetlabs/pdk) to permit the latest version.
- [Release notes](https://github.com/puppetlabs/pdk/releases)
- [Changelog](https://github.com/puppetlabs/pdk/blob/main/CHANGELOG.md)
- [Commits](https://github.com/puppetlabs/pdk/compare/v1.17.0...v2.0.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
tohuwabohu/puppet-duplicity,tohuwabohu/puppet-duplicity