chore: update license year (#21657)

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Angel_Kitty 2020-01-04 00:10:23 +08:00 committed by Shelley Vohr
parent b2071d2966
commit 70029aa069

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@ -1,4 +1,4 @@
Copyright (c) 2013-2019 GitHub Inc.
Copyright (c) 2013-2020 GitHub Inc.
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the