v0.1.57

<!-- Release notes generated using configuration in .github/release.yml at v0.1.57 -->

What's Changed

• switch to using version instead of Version for flaps secrets versions. by @timflyio in https://github.com/superfly/fly-go/pull/175

Full Changelog: https://github.com/superfly/fly-go/compare/v0.1.56...v0.1.57