Upgrade some dependencies

Author: artembilan

build.gradle

@@ -62,11 +62,11 @@ ext {
 	mockitoVersion = '2.26.0'
 	rabbitmqVersion = project.hasProperty('rabbitmqVersion') ? project.rabbitmqVersion : '5.4.3'
 	rabbitmqHttpClientVersion = '2.1.0.RELEASE'
-	reactorVersion = '3.2.11.RELEASE'
+	reactorVersion = '3.2.12.RELEASE'
+	springRetryVersion = '1.2.4.RELEASE'
+	springVersion = project.hasProperty('springVersion') ? project.springVersion : '5.1.11.BUILD-SNAPSHOT'
 
-	springVersion = project.hasProperty('springVersion') ? project.springVersion : '5.1.10.RELEASE'
 
-	springRetryVersion = '1.2.4.RELEASE'
 	expandPlaceholders = '**/quick-tour.xml'
 	javadocLinks = [
 		"https://docs.oracle.com/javase/8/docs/api/",