Switch standalone bazel build to 3.3.0-SNAPSHOT api

Change-Id: Ia4f4b7b4a9e6f86bbc9cf5c009370fd6363e5a7d
diff --git a/WORKSPACE b/WORKSPACE
index 8b7f5fc..8ceff93 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -12,7 +12,7 @@
     "gerrit_api",
 )
 
-gerrit_api()
+gerrit_api(version = "3.3.0-SNAPSHOT")
 
 load("//:external_plugin_deps.bzl", "external_plugin_deps")