Fix #12046: skip publishing nightly build when no new commits since last publish #12074
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Attempting to publish an already published version using
sbt-sonatype
fails with a "Failed to promote the repository" error.
There don't appear to be any configuration settings in
sbt-sontaype
for avoiding this, so instead we ask for published versions from the
Maven Central metadata and skip the publish step if we find a match.
Fixes #12046