Update copyright year in BUILD file.

RELNOTES:none
PiperOrigin-RevId: 265457282
Change-Id: Ibfb7f335c5f8c563ce9b31ba22435eec210cf132
diff --git a/cc/BUILD b/cc/BUILD
index 47af570..333a58a 100644
--- a/cc/BUILD
+++ b/cc/BUILD
@@ -1,4 +1,4 @@
-# Copyright 2018 The Bazel Authors. All rights reserved.
+# Copyright 2019 The Bazel Authors. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.