Upgrade to Spring Security OAuth 2.0.8.RELEASE

Closes gh-4296

spring-boot-dependencies/pom.xml

@@ -142,7 +142,7 @@
 		<spring-retry.version>1.1.2.RELEASE</spring-retry.version>
 		<spring-security.version>4.0.3.CI-SNAPSHOT</spring-security.version>
 		<spring-security-jwt.version>1.0.3.RELEASE</spring-security-jwt.version>
-		<spring-security-oauth.version>2.0.7.RELEASE</spring-security-oauth.version>
+		<spring-security-oauth.version>2.0.8.RELEASE</spring-security-oauth.version>
 		<spring-session.version>1.0.2.RELEASE</spring-session.version>
 		<spring-social.version>1.1.2.RELEASE</spring-social.version>
 		<spring-social-facebook.version>2.0.2.RELEASE</spring-social-facebook.version>