v0.5.2

<!-- Release notes generated using configuration in .github/release.yml at v0.5.2 -->

What's Changed

• Add FLY_FORCE_INSTANCE support by @dangra in https://github.com/superfly/fly-go/pull/228

Full Changelog: https://github.com/superfly/fly-go/compare/v0.5.1...v0.5.2