graphics/spirv-tools: update to 2021.1

Changes:	https://github.com/KhronosGroup/SPIRV-Tools/compare/v2020.7...v2021.1
Reported by:	portscout

graphics/spirv-tools/Makefile

 PORTNAME=	spirv-tools
 DISTVERSIONPREFIX=	v
-DISTVERSION=	2020.7
+DISTVERSION=	2021.1
 CATEGORIES=	graphics
 
 MAINTAINER=	jbeich@FreeBSD.org
@@ -15,7 +15,7 @@ SHEBANG_FILES=	tools/lesspipe/spirv-lesspipe.sh
 USE_GITHUB=	yes
 GH_ACCOUNT=	KhronosGroup
 GH_PROJECT=	SPIRV-Tools
-GH_TUPLE=	KhronosGroup:SPIRV-Headers:1.5.4.raytracing.fixed-29-g75b30a6:headers/external/spirv-headers
+GH_TUPLE=	KhronosGroup:SPIRV-Headers:1.5.4.raytracing.fixed-47-gdafead1:headers/external/spirv-headers
 
 CMAKE_ON=	SPIRV_SKIP_TESTS
 CMAKE_OFF=	SPIRV_WERROR

graphics/spirv-tools/distinfo

-TIMESTAMP = 1613662792
-SHA256 (KhronosGroup-SPIRV-Tools-v2020.7_GH0.tar.gz) = c06eed1c7a1018b232768481184b5ae4d91d614d7bd7358dc2fe306bd0a39c6e
-SIZE (KhronosGroup-SPIRV-Tools-v2020.7_GH0.tar.gz) = 2585866
-SHA256 (KhronosGroup-SPIRV-Headers-1.5.4.raytracing.fixed-29-g75b30a6_GH0.tar.gz) = 03075fc9f52833849bb34210029d029669f96bfc9dcf937b910a8ba7f5f361db
-SIZE (KhronosGroup-SPIRV-Headers-1.5.4.raytracing.fixed-29-g75b30a6_GH0.tar.gz) = 403781
+TIMESTAMP = 1619014387
+SHA256 (KhronosGroup-SPIRV-Tools-v2021.1_GH0.tar.gz) = bd42f6d766ac50f1a1ab46ce96d59e24ab28fb9779a71fccfa8bad760842c274
+SIZE (KhronosGroup-SPIRV-Tools-v2021.1_GH0.tar.gz) = 2608588
+SHA256 (KhronosGroup-SPIRV-Headers-1.5.4.raytracing.fixed-47-gdafead1_GH0.tar.gz) = e38cdf41c089a0688b2024a873d20f84fa259af713ad52430b4d119b5f5380a6
+SIZE (KhronosGroup-SPIRV-Headers-1.5.4.raytracing.fixed-47-gdafead1_GH0.tar.gz) = 405883