This commit removes the `.RELEASE` suffix of the released version, if
necessary. Such commit is not present on GitHub and the changelog
generation process fails to find the milestone to use to generate the
changelog.
Closes gh-26796
This commit fixes the missing pieces in our Maven Central publication
pipeline. Our first attempt at releasing with it showed a few problems:
* the promote task did not have the artifacts downladed with the
artifactory repository
* we applied the wrong Sonatype credentials to the task
* the github changelog task would fail because of docker rate limiting
since we were not using the right type of resource, which is
configured with the proper caching mechanism
See gh-26654
