v4.2.0-pi Java 21 & Spring 6.1

Main

• Java 21 + Spring Boot 3.2
• Full Support for Virtual Threads in Java 21
• Support for Multi-Release Jar(17/21). Since this release project has java version specific sources that are enabled if runs in specific Java runtime. This allows to avoid unnecessary reflection checks as well as embrace some new neat java features without changing the baseline for the whole code base.

Others

• Cucumbers of OAuth 2.0

What's Changed

• China Public Holidays by @lWoHvYe in #293
• Multi-Release JAR Files (Java 17, 21 for unicorn-core) by @lWoHvYe in #301
• Kotlin 1.9.20 GA by @lWoHvYe in #303
• Spring Boot 3.2.0 by @lWoHvYe in #306

Full Changelog: v4.2.0-pi-RC1...v4.2.0-pi