Update copyright years

Author: dannyfreeman

README.md

@@ -563,7 +563,7 @@ An extensive changelog is available [here](CHANGELOG.md).
 
 ## License
 
-Copyright © 2007-2022 Jeffrey Chu, Lennart Staflin, Phil Hagelberg, Bozhidar
+Copyright © 2007-2023 Jeffrey Chu, Lennart Staflin, Phil Hagelberg, Bozhidar
 Batsov, Artur Malabarba, Magnar Sveen and [contributors][].
 
 Distributed under the GNU General Public License; type <kbd>C-h C-c</kbd> to view it.

clojure-mode.el

@@ -1,7 +1,7 @@
 ;;; clojure-mode.el --- Major mode for Clojure code -*- lexical-binding: t; -*-
 
 ;; Copyright © 2007-2013 Jeffrey Chu, Lennart Staflin, Phil Hagelberg
-;; Copyright © 2013-2022 Bozhidar Batsov, Artur Malabarba, Magnar Sveen
+;; Copyright © 2013-2023 Bozhidar Batsov, Artur Malabarba, Magnar Sveen
 ;;
 ;; Authors: Jeffrey Chu <jochu0@gmail.com>
 ;;       Lennart Staflin <lenst@lysator.liu.se>