v0.83.0

What's Changed

• Bump golang.org/x/oauth2 from 0.4.0 to 0.5.0 by @dependabot in https://github.com/planetscale/planetscale-go/pull/153
• Bump golang.org/x/oauth2 from 0.5.0 to 0.6.0 by @dependabot in https://github.com/planetscale/planetscale-go/pull/154
• Implement branch demotion functions by @iheanyi in https://github.com/planetscale/planetscale-go/pull/155

Full Changelog: https://github.com/planetscale/planetscale-go/compare/v0.82.0...v0.83.0