[gnome-terminal] util: Update copyright year

[Egmont Koblinger <egmontkob src gnome org>]

commit ad8d2b3503379fcc45b6e004c542d9ddd0e78044
Author: Egmont Koblinger <egmont gmail com>
Date:   Mon Mar 18 10:42:16 2019 +0100

    util: Update copyright year

 src/terminal-util.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/terminal-util.c b/src/terminal-util.c
index 30cc136c..72a0d401 100644
--- a/src/terminal-util.c
+++ b/src/terminal-util.c
@@ -162,8 +162,8 @@ terminal_util_show_about (void)
     "Copyright © 2002–2004 Havoc Pennington\n"
     "Copyright © 2003–2004, 2007 Mariano Suárez-Alvarez\n"
     "Copyright © 2006 Guilherme de S. Pastore\n"
-    "Copyright © 2007–2018 Christian Persch\n"
-    "Copyright © 2013–2018 Egmont Koblinger";
+    "Copyright © 2007–2019 Christian Persch\n"
+    "Copyright © 2013–2019 Egmont Koblinger";
   char *licence_text;
   GKeyFile *key_file;
   GBytes *bytes;