Upgrade to SnakeYAML 1.19

spring-beans/spring-beans.gradle

@@ -5,10 +5,10 @@ apply plugin: "groovy"
 dependencies {
 	compile(project(':spring-core'))
 	optional("javax.inject:javax.inject:1")
+	optional("org.yaml:snakeyaml:1.19")
+    optional("org.codehaus.groovy:groovy-all:${groovyVersion}")
 	optional("org.jetbrains.kotlin:kotlin-reflect:${kotlinVersion}")
 	optional("org.jetbrains.kotlin:kotlin-stdlib:${kotlinVersion}")
-	optional("org.yaml:snakeyaml:1.18")
-	optional("org.codehaus.groovy:groovy-all:${groovyVersion}")
 	testCompile("org.apache.tomcat.embed:tomcat-embed-core:${tomcatVersion}")
 }