Upgrade to Spring 4.3.9. Fixes #10616

Author: graemerocher

build.gradle

@@ -49,7 +49,7 @@ ext {
     springBootVersion = "1.4.6.RELEASE"
     springLoadedVersion = "1.2.7.RELEASE"
     springLoadedCommonOptions = "-Xverify:none -Dspringloaded.synchronize=true -Djdk.reflect.allowGetCallerClass=true"
-    springVersion = "4.3.7.RELEASE"
+    springVersion = "4.3.9.RELEASE"
     ehcacheVersion = "2.4.6"
     junitVersion = "4.12"
     concurrentlinkedhashmapVersion = "1.4.2"