[skip ci] Release v4.2.1

Author: puneetbehl

gradle.properties

@@ -3,7 +3,7 @@ grailsGradlePluginVersion=5.3.0
 groovyVersion=3.0.10
 liquibaseVersion=4.19.0
 liquibaseHibernateVersion=4.19.0
-projectVersion=4.2.1-SNAPSHOT
+projectVersion=4.2.1
 
 websiteUrl=https://grails-plugins.github.io/grails-database-migration
 issueTrackerUrl=https://github.com/grails-plugins/grails-database-migration/issues