Switch standalone bazel build to 3.3.0-SNAPSHOT api

Change-Id: I5a8e7b66d538fed597992cfd9bf27bf095c9f2d9

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index c7dbaa5..3165f4b 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -12,4 +12,4 @@
     "gerrit_api",
 )
 
-gerrit_api()
+gerrit_api(version = "3.3.0-SNAPSHOT")