pidgin/pidgin

Update the date in COPYRIGHT as it was a few years behind
release-2.x.y
2 months ago, Gary Kramlich
21a56db5f998
Update the date in COPYRIGHT as it was a few years behind

Testing Done:
None

Reviewed at https://reviews.imfreedom.org/r/3007/
[Desktop Entry]
_Name=Pidgin
_GenericName=Internet Messenger
_X-GNOME-FullName=Pidgin Internet Messenger
_Comment=Chat over IM. Supports XMPP, IRC, and more
# TRANSLATORS: Search terms to find this application. Do NOT translate or localize the semicolons! The list MUST also end with a semicolon!
_Keywords=chat;talk;im;message;bonjour;gadu-gadu;irc;groupwise;jabber;sametime;silc;simple;xmpp;zephyr
Exec=pidgin
Icon=pidgin
StartupNotify=true
Terminal=false
Type=Application
Categories=GTK;Network;InstantMessaging;
@USES_MM_CHAT_SECTION@