Copyright update, mostly to trigger bots again.
diff --git a/SPIRV/GlslangToSpv.cpp b/SPIRV/GlslangToSpv.cpp
index 0d4f2c6..b2a93cf 100755
--- a/SPIRV/GlslangToSpv.cpp
+++ b/SPIRV/GlslangToSpv.cpp
@@ -1,6 +1,6 @@
 //
 // Copyright (C) 2014-2016 LunarG, Inc.
-// Copyright (C) 2015-2018 Google, Inc.
+// Copyright (C) 2015-2020 Google, Inc.
 // Copyright (C) 2017 ARM Limited.
 //
 // All rights reserved.