v0.4.0-alpha.28

Changes

• Update dependency org.scalameta:sbt-mdoc to v2.5.3 @renovate (#404)
• Update dependency dev.zio:zio to v2.1.4 @renovate (#405)
• Prevent concurrent builds on branches @erikvanoosten (#406)
• Update README.md @zio-assistant (#403)
• Update dependency dev.zio:zio to v2.1.3 @renovate (#402)