Release process improvement ideas/observations from fwss v1.4.0

This issue serves as a dumping ground of things that can/should be improved in the release process having gone through it as part of https://github.com/FilOzone/filecoin-services/issues/588

PDP specific things are in https://github.com/FilOzone/pdp/issues/307

After the release we'll come back through and decide which items we'll actually handle.

Start by reading issue #588 for the fwss v1.4.0 release context and review the comments here for the observed release-process problems. PDP-specific work is tracked separately in PDP issue #307; this issue is not ready for implementation until the team decides which observations to handle after the release.

Written by the indexing model from the issue text.