Update to RSocket 1.0.4

Closes gh-9602

gradle/dependency-management.gradle

@@ -10,7 +10,7 @@ if (!project.hasProperty('springDataVersion')) {
 	ext.springDataVersion = 'Moore-SR13'
 }
 
-ext.rsocketVersion = '1.0.3'
+ext.rsocketVersion = '1.0.4'
 
 dependencyManagement {
 	imports {