configure: bump the AC_COPYRIGHT year range

diff --git a/configure.ac b/configure.ac
index 6feab9284d1ea4c5252806057ea0d042e3545cea..d08553bb7a6bc5e47bd1aa2c10b1917c34248831 100755 (executable)
--- a/configure.ac
+++ b/configure.ac
@@ -31,7 +31,7 @@ XC_OVR_ZZ60
 CURL_OVERRIDE_AUTOCONF
 
 dnl configure script copyright
-AC_COPYRIGHT([Copyright (c) 1998 - 2019 Daniel Stenberg, <daniel@haxx.se>
+AC_COPYRIGHT([Copyright (c) 1998 - 2020 Daniel Stenberg, <daniel@haxx.se>
 This configure script may be copied, distributed and modified under the
 terms of the curl license; see COPYING for more details])