AMQ-6962 - Update spring to 4.3.17

(cherry picked from commit 1d2dcffceea769a3207be88035633280e192afb7)
diff --git a/pom.xml b/pom.xml
index c9e8752..a257ab4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -118,7 +118,7 @@
     <scalatest-version>2.1.5</scalatest-version>
     <slf4j-version>1.7.25</slf4j-version>
     <snappy-version>1.1.2</snappy-version>
-    <spring-version>4.3.9.RELEASE</spring-version>
+    <spring-version>4.3.17.RELEASE</spring-version>
     <stax2-api-version>3.0.2</stax2-api-version>
     <taglibs-version>1.2.5</taglibs-version>
     <velocity-version>1.7</velocity-version>