Update to Spring Data Moore-SR9

Closes gh-8918

gradle/dependency-management.gradle

@@ -7,7 +7,7 @@ if (!project.hasProperty('springVersion')) {
 }
 
 if (!project.hasProperty('springDataVersion')) {
-	ext.springDataVersion = 'Moore-SR7'
+	ext.springDataVersion = 'Moore-SR9'
 }
 
 ext.rsocketVersion = '1.0.1'