bump spring version to 4.3.5

Signed-off-by: olivier lamy <olamy@apache.org>

pom.xml

@@ -71,7 +71,7 @@
   </distributionManagement>
 
   <properties>
-    <springVersion>4.2.1.RELEASE</springVersion>
+    <springVersion>4.3.5.RELEASE</springVersion>
     <slf4jVersion>1.7.12</slf4jVersion>
     <log4j2Version>2.7</log4j2Version>