Update copyright year for Clippy (2022 edition)

Author: xFrednet

COPYRIGHT

@@ -1,4 +1,4 @@
-Copyright 2014-2021 The Rust Project Developers
+Copyright 2014-2022 The Rust Project Developers
 
 Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
 http://www.apache.org/licenses/LICENSE-2.0> or the MIT license

LICENSE-APACHE

@@ -186,7 +186,7 @@ APPENDIX: How to apply the Apache License to your work.
    same "printed page" as the copyright notice for easier
    identification within third-party archives.
 
-Copyright 2014-2021 The Rust Project Developers
+Copyright 2014-2022 The Rust Project Developers
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.

LICENSE-MIT

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2014-2021 The Rust Project Developers
+Copyright (c) 2014-2022 The Rust Project Developers
 
 Permission is hereby granted, free of charge, to any
 person obtaining a copy of this software and associated

README.md

@@ -238,7 +238,7 @@ If you want to contribute to Clippy, you can find more information in [CONTRIBUT
 
 ## License
 
-Copyright 2014-2021 The Rust Project Developers
+Copyright 2014-2022 The Rust Project Developers
 
 Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
 [https://www.apache.org/licenses/LICENSE-2.0](https://www.apache.org/licenses/LICENSE-2.0)> or the MIT license

rustc_tools_util/README.md

@@ -53,7 +53,7 @@ This gives the following output in clippy:
 
 ## License
 
-Copyright 2014-2020 The Rust Project Developers
+Copyright 2014-2022 The Rust Project Developers
 
 Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
 http://www.apache.org/licenses/LICENSE-2.0> or the MIT license