* Brazilian economy shrinks in Q3 * Brazilian stocks stocks up 1.7% * Mexican peso jumps 1% By Ambar Warrick Dec 2 (Reuters) – Latin American currencies recovered from more than one-year lows on Thursday, although sentiment remained fragile after data showed Brazil sank into a recession in the third quarter, and uncertainty over the Omicron coronavirus variant remained high. Brazil’s real rose 0.6%, taking some support from expectations of improving demand for iron ore exports to China. Data showed the Brazilian economy, Latin America’s largest, contracted 0.1% in the three months to September, amid surging inflation and a severe drought.