net-im/purple-hangouts: deprecate and expire

Long overdue, Google Hangouts service was already discontinued:
https://blog.google/products/workspace/hangouts-to-chat/

net-im/purple-hangouts/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	purple-hangouts
 PORTVERSION=	20210630
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	net-im
 
 MAINTAINER=	ports@FreeBSD.org
@@ -10,6 +10,9 @@ WWW=		https://github.com/EionRobb/purple-hangouts
 LICENSE=	GPLv3+
 LICENSE_FILE=	${WRKSRC}/gpl3.txt
 
+DEPRECATED=	Google Hangouts discontinued 2022-11-01, data deleted 2023-01-01
+EXPIRATION_DATE=	2023-06-30
+
 LIB_DEPENDS=	libpurple.so:net-im/libpurple \
 		libjson-glib-1.0.so:devel/json-glib \
 		libprotobuf-c.so:devel/protobuf-c