Upgrade to Grace Fields Plugin 6.2.0-RC1

Closes gh-828

Author: rainboyan

gradle/grails.versions.toml

@@ -2,7 +2,7 @@
 asset-pipeline = "6.2.0-RC1"
 cache = "6.2.0-RC1"
 database-migration = "6.2.0-M1"
-fields = "6.2.0-M1"
+fields = "6.2.0-RC1"
 geb = "6.2.0-M1"
 hibernate = "2023.2.0-RC1"
 scaffolding = "6.2.0-RC1"