The Linux, macOS and Windows workflows build every file that a release
needs when the release branch is pushed. The new Release workflow finds
those runs for the tagged commit, waits for them, and collects their nine
files into a draft release. It builds nothing, so what ships is what was
tested.
The release notes come from the CHANGELOG.md entry for that version.
Signed-off-by: Ron Evans <ron@hybridgroup.com>