Maven: Build with 2.14.15 API

Change-Id: Ie8997716e69cf7bde8c9162d233f1496cef6ccc8
diff --git a/pom.xml b/pom.xml
index 7b603bd..86c3e19 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>2.14.13</version>
+    <version>2.14.15</version>
     <name>Slack Integration Plugin</name>
 
     <properties>