Bump to Gerrit API Ver. 2.11.3

pom.xml

diff --git a/pom.xml b/pom.xml
index d3c6f7e..c35cbed 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <Gerrit-ApiType>PLUGIN</Gerrit-ApiType>
-    <Gerrit-ApiVersion>2.6-SNAPSHOT</Gerrit-ApiVersion>
+    <Gerrit-ApiVersion>2.11.3</Gerrit-ApiVersion>
   </properties>
 
   <build>