privoxy-regression-test.pl: Bump copyright

diff --git a/tools/privoxy-regression-test.pl b/tools/privoxy-regression-test.pl
index 523f4db..d9ca098 100755 (executable)
--- a/tools/privoxy-regression-test.pl
+++ b/tools/privoxy-regression-test.pl
@@ -17,7 +17,7 @@
 # - Document magic Expect Header values
 # - Internal fuzz support?
 #
-# Copyright (c) 2007-2021 Fabian Keil <fk@fabiankeil.de>
+# Copyright (c) 2007-2023 Fabian Keil <fk@fabiankeil.de>
 #
 # Permission to use, copy, modify, and distribute this software for any
 # purpose with or without fee is hereby granted, provided that the above