Revert copyright year

cdupuis · cdupuis · commit b94f601b4cfa · 2023-02-08T21:47:42.000+01:00
diff --git a/internal/deprecation.go b/internal/deprecation.go
@@ -1,5 +1,5 @@
 /*
-   Copyright 2023 Docker Inc.
+   Copyright 2020 Docker Inc.
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
