workflows/labels: fix approval label with maintainers (#416739)

                // And the labels that should be there

                const after = JSON.parse(await readFile('comparison/changed-paths.json', 'utf-8')).labels

                if (approvals.size > 0) after.push(`12.approvals: ${approvals.size > 2 ? '3+' : approvals.size}`)

                if (Array.from(maintainers).some(approvals.has)) after.push('12.approved-by: package-maintainer')

                if (Array.from(maintainers).some(m => approvals.has(m))) after.push('12.approved-by: package-maintainer')

                // Remove the ones not needed anymore

                await Promise.all(