git-cliff's --tag flag sets a version label, it does not restrict which
commits are scanned. Without a positional range argument, git-cliff walks
the entire commit history and generates every historical release section,
producing a release body that contains the full changelog.
Pass "${PREV_TAG}..${CURRENT_TAG}" as the range argument so git-cliff only
processes commits introduced in the current release. The full CHANGELOG.md
generation is unchanged (no range — intentional, it covers all tags).
