v0.4.0

Breaking

• Using the latest otel4s version
• Rename service package to nats4cats.unstable.service._

What's Changed

• Dependency updates by @scala-steward in #38
• Patch updates by @scala-steward in #36
• Dependency updates by @scala-steward in #39

Full Changelog: v0.3.1...v0.4.0