This reverts commit 9016e00e7b and updates
the 'latest' version detection logic to iterate over releases and pick
the latest matching semver, instead of relying on GitHub's
'/releases/latest' API.
This reverts commit 730ffa8de5.
Lately, Elastic's release pipeline has been tagging releases from the
older 6.x series as "latest" in place of releases from the current 7.x
series. This results in weekly PRs from GitHub Actions for _downgrading_
our stack from 7.x to 6.x.
In order to avoid receiving those PRs, we disable the update workflow
entirely until the Elastic 6.x release series is marked as EOL.
Ref. elastic/elasticsearch#75436Closes#611
Antoine Cotten