Adjust the upload and download of artifacts v4

[pwalczysko]

This is trying to address #447

This branch starts from the https://github.com/ome/omero-insight/actions/runs/10884718399 - the commit a3ea82d -> where the build started to fail because of the same-named artifacts.

The strategy taken:

Upload:

1. add the matrix.os motif to the artifact name -> this is by itself not enough, as we build 2 artifacts per OS on 2 occassions
2. add a hardcoded string such as omero_ which is taken from the foldername of the path variable just below the name of the artifact

Download:

1. adjust the file: artifacts/* -> file: artifacts*/* so that the artifacts are found in all folders created during Upload.

I have pushed an xxx-test8 tag to my private branch show-tagged-artifacts (because I do not want to push tags to this branch so as not to trigger a real release) and this resulted in Release with artifacts

cc @jburel

[pwalczysko]

I have pushed an xxx-test8 tag to my private branch show-tagged-artifacts (because I do not want to push tags to this branch so as not to trigger a real release) and this resulted in Release with artifacts

[jburel]

Tested on my account. Everything works as expected
Thanks @pwalczysko