Version 4.6.0

Other changes

• Add Rails 7.0 to test matrix

What's Changed

• Migrate to GitHub Actions by @eitoball in #129
• Update build status badge by @eitoball in #130
• Add rails 7.0.0 alpha2 and update gems (was #128) by @eitoball in #131
• Add Rails 7.0 to test matrix by @eitoball in #132
• Version 4.6.0 by @eitoball in #133

Full Changelog: v4.5.0...v4.6.0