Update copyright year to 2022

GIT_SILENT

src/main.cpp

@@ -43,7 +43,7 @@ int main(int argc, char* argv[])
         QStringLiteral(KONVI_VERSION_STRING),
         i18n("A user-friendly IRC client"),
         KAboutLicense::GPL,
-        i18n("Copyright 2002-%1 by the Konversation team", QStringLiteral("2020")),
+        i18n("Copyright 2002-%1 by the Konversation team", QStringLiteral("2022")),
         i18n("Konversation is a client for the Internet Relay Chat (IRC) protocol.\n\n"
         "Meet friends on the net, make new acquaintances and lose yourself in talk about your favorite subject."),
         QStringLiteral("https://konversation.kde.org/"));