pom.xml: updated Spring Security to 3.2.7.RELEASE

@see https://spring.io/blog/2015/02/26/spring-security-3-2-6-released
@see https://spring.io/blog/2015/03/26/spring-security-3-2-7-released

No functional changes.

Author: php-coder

pom.xml

@@ -19,7 +19,7 @@
 		<slf4j.version>1.7.9</slf4j.version>
 		<spring.version>4.1.6.RELEASE</spring.version>
 		<spring.data.version>1.6.4.RELEASE</spring.data.version>
-		<spring.security.version>3.2.5.RELEASE</spring.security.version>
+		<spring.security.version>3.2.7.RELEASE</spring.security.version>
 		<h2.version>1.4.184</h2.version>
 		<javax.validation.version>1.1.0.Final</javax.validation.version>
 		<javax.inject.version>1</javax.inject.version>