Upgrade to Spring 5.0.8.RELEASE

Fixes mybatisgh-308

Author: kazuki43zoo

Diff for: pom.xml

@@ -106,7 +106,7 @@
     <osgi.dynamicImport>*</osgi.dynamicImport>
 
     <mybatis.version>3.5.0-SNAPSHOT</mybatis.version>
-    <spring.version>5.0.6.RELEASE</spring.version>
+    <spring.version>5.0.8.RELEASE</spring.version>
     <spring-batch.version>4.0.1.RELEASE</spring-batch.version>
 
   </properties>