Update LICENSE.txt

Add PUC-Rio copyright here as well for ease of distribution; now we don't need lua_LICENSE and might remove it in the future.
luau-lang · Nov 3, 2021 · cba635f · cba635f
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commit cba635f
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/LICENSE.txt b/LICENSE.txt
@@ -1,6 +1,7 @@
 MIT License
 
 Copyright (c) 2019-2021 Roblox Corporation
+Copyright (c) 1994–2019 Lua.org, PUC-Rio.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in