Set Gerrit API to 3.3.1-SNAPSHOT

Change-Id: I2d231e2274fd19d95e1290bce4b0498700a4965b

build.sbt

diff --git a/build.sbt b/build.sbt
index 74e189c..5fc126d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 enablePlugins(GitVersioning)
 
-val gerritApiVersion = "3.3.0-SNAPSHOT"
+val gerritApiVersion = "3.3.1-SNAPSHOT"
 
 val pluginName = "analytics"