graphics/vulkan-loader: update to 1.3.255

Changes:	https://github.com/KhronosGroup/Vulkan-Loader/compare/v1.3.254...v1.3.255
Reported by:	Repology, portscout

graphics/vulkan-loader/Makefile

 PORTNAME=	vulkan-loader
 DISTVERSIONPREFIX=	v
-DISTVERSION=	1.3.254
-PORTREVISION=	1
+DISTVERSION=	1.3.255
 CATEGORIES=	graphics devel
 
 MAINTAINER=	jbeich@FreeBSD.org

graphics/vulkan-loader/distinfo

-TIMESTAMP = 1686940480
-SHA256 (KhronosGroup-Vulkan-Loader-v1.3.254_GH0.tar.gz) = 5057ef73468b38c7d91be1637b5cba46d5d6c798589a161f46b015bcf15481d1
-SIZE (KhronosGroup-Vulkan-Loader-v1.3.254_GH0.tar.gz) = 1691903
+TIMESTAMP = 1687548175
+SHA256 (KhronosGroup-Vulkan-Loader-v1.3.255_GH0.tar.gz) = dbce362b3279ccd3518f0d1a4c64641019390f6519a0af0f371518cb10802bfd
+SIZE (KhronosGroup-Vulkan-Loader-v1.3.255_GH0.tar.gz) = 1676764

graphics/vulkan-loader/pkg-plist

 lib/libvulkan.so
 lib/libvulkan.so.1
-lib/libvulkan.so.1.3.254
+lib/libvulkan.so.1.3.255
 libdata/pkgconfig/vulkan.pc