Upgrade to Grace Async and Events 6.2.0-RC1

Closes gh-823

Author: rainboyan

gradle/libs.versions.toml

@@ -13,8 +13,8 @@ commons-text = "1.13.0"
 glassfish-web-jsp-jstl = "3.0.1"
 gradle = "8.12"
 gradle-git-properties = "2.4.2"
-grace-async = "6.2.0-M1"
-grace-events = "6.2.0-M1"
+grace-async = "6.2.0-RC1"
+grace-events = "6.2.0-RC1"
 grails-gdoc = "1.0.1"
 grace-gorm = "2023.2.0-M1"
 grace-gorm-hibernate = "2023.2.0-M1"