devel/spirv-llvm-translator: update to 18.1.4 and 1[4-7].0.4

Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v14.0.4
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v15.0.4
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v16.0.4
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v17.0.4
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v18.1.4
Reported by: GitHub (watch releases)