Update plugin BOM (#12677)

Update Grails Gradle Plugin to 5.2.3 in the BOM

Author: puneetbehl

grails-bom/plugins.properties

@@ -1,7 +1,7 @@
 gorm.hibernate5=7.3.0
 gorm.mongodb=7.3.0
 gorm.neo4j=7.3.0
-grails-gradle-plugin=5.2.2
+grails-gradle-plugin=5.2.3
 cache=5.0.1
 rxjava=1.1.1
 rxjava2=2.0.0