docs: drop license end year (#6767)

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2012-2022 Fabien Potencier, Dariusz Rumiński
+Copyright (c) 2012+ Fabien Potencier, Dariusz Rumiński
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

logo.md

@@ -1,3 +1,3 @@
-The logo is © 2010-2022 Sensio Labs.
+The logo is © 2010+ Sensio Labs.
 
 Original resolution can be found at https://github.com/PHP-CS-Fixer/logo .