devel/spirv-llvm-translator: update to 20.1.1/20.1.7/19.1.12/18.1.17/1[5-7].0.17/14.0.16/13.0.4

Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v13.0.4
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v14.0.16
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v15.0.17
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v16.0.17
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v17.0.17
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v18.1.17
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v19.1.12
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v20.1.7
Changes: https://github.com/KhronosGroup/SPIRV-LLVM-Translator/releases/tag/v21.1.1
Reported by: GitHub (watch releases)