Change the release workflow and jobs to ensure more of it is always
exercised for any change and only the actual publishing of the release
is the only part that is limited to be run when tagged.
Additionally try to enable caching and save the generated notes as an
artifact in case the final step fails.
Ensure that the github script to retrieve the default branch uses string
encoding instead of json. This will strip the unnecessary quotes
preventing matching.
Ensure the release workflow will work consistently by limiting the
number of issues that are checked in addition to making use of a cache.
This should keep the requests below the API limit and overtime may be
increased should the cache be retained.
Add checks to determine the correct default branch and look to establish
if the tag that was created is reachable from this branch, using it as
the value for `commitish` to the create release action so that it
retains the `x commits since release` text and link.
In the case the workflow is re-run for a release after another release
look to pick up the next tag after this release in order to limit the
release notes from updating with additional fixes.
Add github actions to automatically populate release notes on tag push.
This should make it easier to show what new functionality/improvements
have been added by populating the release page based on PRs and issues.
