v0.1.68

<!-- Release notes generated using configuration in .github/release.yml at v0.1.68 -->

What's Changed

• Re-add WaitForApp to flaps.Client by @rianmcguirefly in https://github.com/superfly/fly-go/pull/193

Full Changelog: https://github.com/superfly/fly-go/compare/v0.1.67...v0.1.68