[gnote] Update program copyright

[Aurimas Černius <aurimasc src gnome org>]

commit 2e199079a0fdfa315e68205d2c9bd4566fb560d5
Author: Aurimas Černius <aurisc4 gmail com>
Date:   Fri Jan 1 18:11:51 2021 +0200

    Update program copyright

 src/gnote.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/gnote.cpp b/src/gnote.cpp
index 876496bb..d8e9efdd 100644
--- a/src/gnote.cpp
+++ b/src/gnote.cpp
@@ -1,7 +1,7 @@
 /*
  * gnote
  *
- * Copyright (C) 2010-2020 Aurimas Cernius
+ * Copyright (C) 2010-2021 Aurimas Cernius
  * Copyright (C) 2010 Debarshi Ray
  * Copyright (C) 2009 Hubert Figuiere
  *
@@ -292,7 +292,7 @@ namespace gnote {
     about.set_program_name("Gnote");
     about.set_version(VERSION);
     about.set_logo(m_icon_manager.get_icon(IconManager::GNOTE, 48));
-    about.set_copyright(_("Copyright \xc2\xa9 2010-2020 Aurimas Cernius\n"
+    about.set_copyright(_("Copyright \xc2\xa9 2010-2021 Aurimas Cernius\n"
                           "Copyright \xc2\xa9 2009-2011 Debarshi Ray\n"
                           "Copyright \xc2\xa9 2009 Hubert Figuiere\n"
                           "Copyright \xc2\xa9 2004-2009 the Tomboy original authors."));