Changelog for 2.299

What's new in 2.299 (2021-06-22)

• Update stapler from 1539.v2f05ce93882d to 1563.v3da2d02f9572. (pull 5549, Stapler 1539.v2f05ce93882d changelog, Stapler 1563.v3da2d02f9572 changelog)
• Developer: InterceptingExecutorService and its subclasses no longer extend com.google.common.util.concurrent.ForwardingExecutorService or com.google.common.collect.ForwardingObject. (pull 5565)
• Remove jna-posix dependency from Jenkins core. Plugins that use jna-posix functionality must be migrated from jna-posix to jnr-posix. (pull 5560, Maven Repository Scheduled Cleanup plugin, SICCI for Xcode plugin, java.io.tmpdir cleaner plugin)