Upgrade to Narayana 5.6.4.Final

Closes spring-projectsgh-10003

Author: Gytis Trikleris

spring-boot-dependencies/pom.xml

@@ -134,7 +134,7 @@
 		<mongo-driver-reactivestreams.version>1.5.0</mongo-driver-reactivestreams.version>
 		<mongodb.version>3.4.2</mongodb.version>
 		<mysql.version>5.1.43</mysql.version>
-		<narayana.version>5.6.3.Final</narayana.version>
+		<narayana.version>5.6.4.Final</narayana.version>
 		<nekohtml.version>1.9.22</nekohtml.version>
 		<neo4j-ogm.version>3.0.0-RC1</neo4j-ogm.version>
 		<netty.version>4.1.13.Final</netty.version>