graphics/libepoxy: update to 1.5.10

Changes:    https://github.com/anholt/libepoxy/releases/tag/1.5.10
Reviewed by:	diizzy, jbeich
Tested by:	arrowd
Pull Request:	https://github.com/freebsd/freebsd-ports/pull/273
Sponsored by:   Serenity Cybersecurity, LLC

graphics/libepoxy/Makefile

 PORTNAME=	libepoxy
-DISTVERSION=	1.5.9
+DISTVERSION=	1.5.10
 CATEGORIES=	graphics
-MASTER_SITES=	https://github.com/anholt/${PORTNAME}/releases/download/${DISTVERSION}/
+MASTER_SITES=   GNOME/sources/${PORTNAME}/${PORTVERSION:C/\.([0-9]+)$$//}
 
 MAINTAINER=	x11@FreeBSD.org
 COMMENT=	Library to handle OpenGL function pointer management

graphics/libepoxy/distinfo

-TIMESTAMP = 1629063081
-SHA256 (libepoxy-1.5.9.tar.xz) = d168a19a6edfdd9977fef1308ccf516079856a4275cf876de688fb7927e365e4
-SIZE (libepoxy-1.5.9.tar.xz) = 221924
+TIMESTAMP = 1720873510
+SHA256 (libepoxy-1.5.10.tar.xz) = 072cda4b59dd098bba8c2363a6247299db1fa89411dc221c8b81b8ee8192e623
+SIZE (libepoxy-1.5.10.tar.xz) = 223528