Release v1.5.0.1

This very minor release only affects the static trident executables produced for every release.

It introduces a distinction between pre-built X64 and ARM64 executables for macOS, where changes in the main processor architecture have recently rendered old builds invalid for new systems and vice versa.

That means the executable trident-macOS will henceforward not longer exist, but instead the executables trident-macOS-X64 and trident-macOS-ARM64.

In the past we have not explicitly documented changes in the compilation pipeline - v1.5.0.0, for example, came with a major overhaul of the pipeline - but in this case a small version bump seems to be in order to announce the split in available artefacts.