User-Agent now includes consumer and fly-go version

<!-- Release notes generated using configuration in .github/release.yml at v0.8.0 -->

What's Changed

• Bump j178/prek-action from 2.0.4 to 2.0.5 by @dependabot[bot] in https://github.com/superfly/fly-go/pull/252
• Bump golangci/golangci-lint-action from 9.2.1 to 9.3.0 by @dependabot[bot] in https://github.com/superfly/fly-go/pull/253
• Default the User-Agent to <consumer>/<version> fly-go/<version> by @dangra in https://github.com/superfly/fly-go/pull/254

Full Changelog: https://github.com/superfly/fly-go/compare/v0.7.0...v0.8.0