configure: Bump copyright

diff --git a/configure.in b/configure.in
index 8718a8d..147fe1e 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 dnl
-dnl Written by and Copyright (C) 2001-2020 the
+dnl Written by and Copyright (C) 2001-2021 the
 dnl Privoxy team. https://www.privoxy.org/
 dnl
 dnl Based on the Internet Junkbuster originally written