Nightly release 355b506b28873277785bb347eecc956753546431

Use changing release tags

It's not good with default git remote settings that a tag
keeps getting moved from one commit to another.
For each nightly release, a unique tag will be created.
Recycling old nightlies is done via listing existing tags
and removing their associated releases.

Release test-release-v4

Test release workflow

Release test-release-v3

Test release workflow

Rolling release 2d7efbe99caa54f61628dfe6c822cec84b17e958

Emulate a longer build pause

Make it more than the asset build times seen in jormungandr.

Release test-release-v2

Test release

Release test-release-v1

Test release