x11-wm/gamescope: update to 3.13.8

Changes:	https://github.com/Plagman/gamescope/compare/3.13.7...3.13.8
Reported by:	Repology, portscout

x11-wm/gamescope/Makefile

 PORTNAME=	gamescope
-DISTVERSION=	3.13.7
-PORTREVISION=	1
+DISTVERSION=	3.13.8
 CATEGORIES=	x11-wm wayland
 
 PATCH_SITES=	https://github.com/${GH_ACCOUNT}/${GH_PROJECT}/commit/

x11-wm/gamescope/distinfo

-TIMESTAMP = 1700272290
-SHA256 (ValveSoftware-gamescope-3.13.7_GH0.tar.gz) = 961ecebaf2a259f4f1da6b96237da0bf1b7fec32be2928103556e833e24939c6
-SIZE (ValveSoftware-gamescope-3.13.7_GH0.tar.gz) = 476498
+TIMESTAMP = 1700602830
+SHA256 (ValveSoftware-gamescope-3.13.8_GH0.tar.gz) = 660120f41aa5fb62d4d5f467751470add3897d305dae480cf27d6d49ae2d4817
+SIZE (ValveSoftware-gamescope-3.13.8_GH0.tar.gz) = 476534
 SHA256 (nothings-stb-5736b15_GH0.tar.gz) = 8e18fa73396a3206129c55a3bc409401353991470245941d6ba7d8ce57df864f
 SIZE (nothings-stb-5736b15_GH0.tar.gz) = 1392565
 SHA256 (KhronosGroup-SPIRV-Headers-1.5.4.raytracing.fixed-316-gd790ced_GH0.tar.gz) = 4677f51365937acb78df4067359d32742c5c649f2beb8f8afb7e1002329cea46