[why]
The self-written upload-archives script is some issues, for example it
does not replace preexisting release files with new ones when a release
is re-triggered. The error messages are rudimentary at best.
[how]
Use https://github.com/softprops/action-gh-release instead.
Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>