[meld/meld-3-20] Update copyright in About dialog (#603)

[Kai Willadsen <kaiw src gnome org>]

commit ee76529cc203ab5c05ea5f0079f255eebaea07e1
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sat Jul 24 16:22:54 2021 +1000

    Update copyright in About dialog (#603)

 data/ui/application.ui | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/data/ui/application.ui b/data/ui/application.ui
index d4a6c14e..0bf4b72c 100644
--- a/data/ui/application.ui
+++ b/data/ui/application.ui
@@ -10,7 +10,7 @@
     <property name="type_hint">dialog</property>
     <property name="program_name">Meld</property>
     <property name="copyright" translatable="yes">Copyright © 2002-2009 Stephen Kennedy
-Copyright © 2009-2017 Kai Willadsen</property>
+Copyright © 2009-2021 Kai Willadsen</property>
     <property name="website">http://meldmerge.org/</property>
     <property name="website_label" translatable="yes">Website</property>
     <property name="authors">Stephen Kennedy