Format BUILD file with buildifier 0.12.0

Change-Id: I94b8a3099f8365b4d4f221ca9a81e52416e7c4a6
diff --git a/BUILD b/BUILD
index f00a175..aad784a 100644
--- a/BUILD
+++ b/BUILD
@@ -1,9 +1,9 @@
 load("//tools/bzl:junit.bzl", "junit_tests")
 load(
     "//tools/bzl:plugin.bzl",
-    "gerrit_plugin",
     "PLUGIN_DEPS",
     "PLUGIN_TEST_DEPS",
+    "gerrit_plugin",
 )
 
 gerrit_plugin(