ci: inconsistent naming of gh release assets

[axel-kah]

Hi,
I'm in the process of proposing a simpler and cross platform approach to enable a lychee pre-commit hook which uses the pre-built binaries. For that to work cross platform, the filenames of the release assets need a fix. linux assets are all consistent but differ from macos and windows assets.

I prepared a PR which renames the windows and mac assets to match the linux pattern. I figured while I'm at it, I could also strip the version from the filenames. This unlocks the possibility to offer a permalink to the latest release, without having to know the version:

https://docs.github.com/en/repositories/releasing-projects-on-github/linking-to-releases#linking-to-the-latest-release

This makes it trivial for downstream consumers to automate the download of the latest binary (after weighting the pro's and con's of course 😉).