Upgrade Spring Security 5.0.8

(Mostly to bring fresh build for release process)

Author: artembilan

build.gradle

@@ -151,7 +151,7 @@ subprojects { subproject ->
 		springDataMongoVersion = '2.0.11.RELEASE'
 		springDataRedisVersion = '2.0.11.RELEASE'
 		springGemfireVersion = '2.0.11.RELEASE'
-		springSecurityVersion = '5.0.7.RELEASE'
+		springSecurityVersion = '5.0.8.RELEASE'
 		springSocialTwitterVersion = '1.1.2.RELEASE'
 		springRetryVersion = '1.2.2.RELEASE'
 		springVersion = project.hasProperty('springVersion') ? project.springVersion : '5.0.10.RELEASE'