v0.1.51

<!-- Release notes generated using configuration in .github/release.yml at v0.1.51 -->

What's Changed

• support machine api for updating app secrets in bulk and getting back updated min_vers. by @timflyio in https://github.com/superfly/fly-go/pull/164

Full Changelog: https://github.com/superfly/fly-go/compare/v0.1.50...v0.1.51