[spring] Upgrade spring dependency to 3.0.6.RELEASE

Author: Putthibong Boonbong

pom.xml

@@ -75,7 +75,7 @@
 
     <properties>
         <findbugs.onlyAnalyze>org.mybatis.spring.*,org.mybatis.spring.mapper.*,org.mybatis.spring.support.*,org.mybatis.spring.transaction.*</findbugs.onlyAnalyze>
-        <spring.version>3.0.5.RELEASE</spring.version>
+        <spring.version>3.0.6.RELEASE</spring.version>
         <clirr.comparisonVersion>1.0.0-RC3</clirr.comparisonVersion>
         <gcu.product>Spring</gcu.product>
     </properties>