The pull request has only one (non-merge) commit and in this case Github will use it as the default commit message when merging. The pull request title doesn't match the commit though ("chore(deps): Bump conventional-changelog-conventionalcommits from 5.0.0 to 8.0.0" vs. "chore(deps): Bump conventional-changelog-conventionalcommits"). Please update the pull request title accordingly to avoid surprises.