devel/spirv-llvm-translator: update to 19.1.3/18.1.8/1[4-7].0.8

Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v14.0.8
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v15.0.8
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v16.0.8
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v17.0.8
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v18.1.8
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v19.1.3
Reported by: GitHub (watch releases)