update to latest couchbase client

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1695937 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 103c21c..3f243e8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,7 +43,7 @@
 
     <properties>
         <sling.java.version>7</sling.java.version>
-        <couchbase.client.version>2.1.3</couchbase.client.version>
+        <couchbase.client.version>2.1.4</couchbase.client.version>
     </properties>
 
     <dependencies>