Update Spring dependencies to latest snapshots

Author: fmbenhassine

build.gradle

@@ -47,17 +47,17 @@ allprojects {
 
 		environmentProperty = project.hasProperty('environment') ? getProperty('environment') : 'hsql'
 
-		springVersionDefault = '5.2.16.BUILD-SNAPSHOT'
+		springVersionDefault = '5.2.19.BUILD-SNAPSHOT'
 		springVersion = project.hasProperty('springVersion') ? getProperty('springVersion') : springVersionDefault
 		springRetryVersion = '1.2.5.RELEASE'
-		springAmqpVersion = '2.2.18.BUILD-SNAPSHOT'
+		springAmqpVersion = '2.2.20.BUILD-SNAPSHOT'
 		springDataCommonsVersion = '2.2.14.BUILD-SNAPSHOT'
 		springDataGemfireVersion = '2.2.14.BUILD-SNAPSHOT'
 		springDataJpaVersion = '2.2.14.BUILD-SNAPSHOT'
 		springDataMongodbVersion = '2.2.14.BUILD-SNAPSHOT'
 		springDataNeo4jVersion = '5.2.14.BUILD-SNAPSHOT'
 		springIntegrationVersion = '5.2.12.BUILD-SNAPSHOT'
-		springKafkaVersion = '2.3.14.BUILD-SNAPSHOT'
+		springKafkaVersion = '2.3.15.BUILD-SNAPSHOT'
 		springLdapVersion = '2.3.5.BUILD-SNAPSHOT'
 		micrometerVersion = '1.3.20'