v1.0.0-RC27 [Scala3] Fix: `SubtypeCustom[A]` should behave like subtype of `A`

What's Changed

• Bump actions/checkout from 4.1.4 to 4.1.5 by @dependabot in #1318
• Update README.md by @zio-assistant in #1319
• CommutativeIdentity for Unit by @SimY4 in #1321
• Update sbt-bloop to 1.5.18 by @zio-scala-steward in #1323
• Bump actions/checkout from 4.1.5 to 4.1.6 by @dependabot in #1320
• Update cats-core to 2.12.0 by @zio-scala-steward in #1325
• Update zio-sbt-website to 0.4.0-alpha.27 by @zio-scala-steward in #1324
• [Scala3] Fix: SubtypeCustom[A] should behave like subtype of A by @guizmaii in #1328

Full Changelog: v1.0.0-RC26...v1.0.0-RC27