Merge pull request #1575 from grails/renovate/caffeineversion

Update dependency com.github.ben-manes.caffeine:caffeine to v2.9.3

Author: puneetbehl

gradle.properties

@@ -14,7 +14,7 @@ hibernateVersion=5.6.1.Final
 servletApiVersion=4.0.1
 spockVersion=2.0-groovy-3.0
 springVersion=5.3.13
-caffeineVersion=2.9.2
+caffeineVersion=2.9.3
 grailsVersion=5.0.2
 grailsAsyncVersion=4.0.0
 slf4jVersion=1.7.32