www/p5-libservlet: Mark DEPRECATED

- Upstream unmaintained since 2001
- Set EXPIRATION_DATE 2024-04-13

If someone needs this port feel free to undeprecate and takeover
maintainership.

www/p5-libservlet/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	libservlet
 PORTVERSION=	0.9.2
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	www perl5
 MASTER_SITES=	SF
 PKGNAMEPREFIX=	p5-
@@ -12,6 +12,9 @@ WWW=		https://libservlet.sourceforge.net/
 LICENSE=	ART10 GPLv1+
 LICENSE_COMB=	dual
 
+DEPRECATED=	Upstream unmaintained and last release was in 2001
+EXPIRATION_DATE=2024-04-13
+
 BUILD_DEPENDS=	${RUN_DEPENDS}
 RUN_DEPENDS=	p5-Exception-Class>=0:devel/p5-Exception-Class