devel/spirv-llvm-translator: update to 18.1.5 and 1[4-7].0.5

Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v14.0.5
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v15.0.5
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v16.0.5
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v17.0.5
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v18.1.5
Reported by: GitHub (watch releases)