Upgraded to Testcontainers 1.16.3

Author: musketyr

gradle.properties

@@ -56,7 +56,7 @@ grails.version = 4.0.10
 aws.sdk.version = 1.11.1020
 aws.sdk.v2.version = 2.16.63
 log4j.version = 2.15.0
-testcontainers.version = 1.15.3
+testcontainers.version = 1.16.3
 jackson.version = 2.12.3