Upgrade to Spring Security JWT 1.0.8.RELEASE

Closes gh-9368

spring-boot-dependencies/pom.xml

@@ -167,7 +167,7 @@
 		<spring-restdocs.version>1.1.3.RELEASE</spring-restdocs.version>
 		<spring-retry.version>1.2.0.RELEASE</spring-retry.version>
 		<spring-security.version>4.2.2.RELEASE</spring-security.version>
-		<spring-security-jwt.version>1.0.7.RELEASE</spring-security-jwt.version>
+		<spring-security-jwt.version>1.0.8.RELEASE</spring-security-jwt.version>
 		<spring-security-oauth.version>2.0.14.RELEASE</spring-security-oauth.version>
 		<spring-session.version>1.3.1.RELEASE</spring-session.version>
 		<spring-social.version>1.1.4.RELEASE</spring-social.version>