#705 docs(release): align Darwin runner comment

Outcome

Follow up merged #704 by updating the remaining release-workflow comment from macos-14 to macos-15.

The functional runner change is already merged. This PR changes documentation only and addresses the valid Cubic P3 on #704.

Verification

$ git diff --check
# exit 0

$ rg -n 'macos-14|macos-15' .github/workflows/publish.yml
164:  # macOS SDK on the linux runner), and macos-15 runners are Apple Silicon, so
177:    runs-on: macos-15
289:      # real on the macos-15 runner that built it.

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Summary by cubic

Updates release workflow comments from macos-14 to macos-15 to match the runner used since the functional change was merged in #704. Documentation only; no behavior changes.