Manual copyright update

Signed-off-by: Nandan Hegde <220186393+nandanhegde73@users.noreply.github.com>

Author: nandanhegde73

COPYRIGHT.md

@@ -0,0 +1 @@
+Copyright (c) 2015-2025 Progress Software Corporation and/or its subsidiaries or affiliates. All Rights Reserved.

README.md

@@ -428,3 +428,6 @@ VCR is a tool that helps cache and replay http responses. When these responses c
 3. Commit your changes (`git commit -am 'Add some feature'`)
 4. Push to the branch (`git push origin my-new-feature`)
 5. Create a new Pull Request
+
+# Copyright
+See [COPYRIGHT.md](./COPYRIGHT.md).

spec/unit/mixlib/install/backend/package_router_spec.rb

@@ -1,6 +1,6 @@
 #
 # Author:: Patrick Wright (<patrick@chef.io>)
-# Copyright:: Copyright (c) 2016 Chef, Inc.
+# Copyright:: Copyright (c) 2015-2025 Progress Software Corporation and/or its subsidiaries or affiliates. All Rights Reserved.
 # License:: Apache License, Version 2.0
 #
 # Licensed under the Apache License, Version 2.0 (the "License");