Fixed period year in header.

#368 (comment)

src/test/java/com/puppycrawl/tools/checkstyle/filters/AbstractPatchFilterEvaluationTest.java

@@ -1,6 +1,6 @@
 ///////////////////////////////////////////////////////////////////////////////////////////////
 // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
-// Copyright (C) 2001-2022 the original author or authors.
+// Copyright (C) 2001-2024 the original author or authors.
 //
 // This library is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public