devel/spirv-llvm-translator: update to 21.1.4/20.1.10/19.1.15/18.1.20/16.0.21/1[4-7].0.20
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v14.0.20
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v15.0.20
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v16.0.21
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v17.0.20
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v18.1.20
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v19.1.15
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v20.1.10
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v21.1.4
Reported by: GitHub (watch releases)