Maven: Build with 2.16.6

Change-Id: I4fb84f80a3709598d28ea93cdcfa4e356a18138d
diff --git a/pom.xml b/pom.xml
index 4e60529..6a00df8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
     <groupId>com.cisco.gerrit.plugins</groupId>
     <artifactId>slack-integration</artifactId>
     <packaging>jar</packaging>
-    <version>2.16.5</version>
+    <version>2.16.6</version>
     <name>Slack Integration Plugin</name>
 
     <properties>