Upgrade Spring Security 3.2.6.RELEASE

Closes gh-2582

spring-boot-dependencies/pom.xml

@@ -106,7 +106,7 @@
 		<spring-integration.version>4.0.6.RELEASE</spring-integration.version>
 		<spring-loaded.version>1.2.1.RELEASE</spring-loaded.version>
 		<spring-mobile.version>1.1.3.RELEASE</spring-mobile.version>
-		<spring-security.version>3.2.5.RELEASE</spring-security.version>
+		<spring-security.version>3.2.6.RELEASE</spring-security.version>
 		<spring-security-jwt.version>1.0.3.RELEASE</spring-security-jwt.version>
 		<spring-social.version>1.1.0.RELEASE</spring-social.version>
 		<spring-social-facebook.version>1.1.1.RELEASE</spring-social-facebook.version>