BOGOTA (Reuters) – Colombian President Gustavo Petro and his Venezuelan counterpart Nicolas Maduro will meet in Caracas on Tuesday to discuss their countries’ recently-thawed bilateral ties and expanded trade, the Colombian government said on Monday. The neighbors’ fraught relationship has improved since Petro took office in August on promises to fully restart trade, with cargo transport now allowed at border crossings between the Colombian city of Cucuta and the Venezuelan state of Tachira. “President Gustavo Petro will travel to the city of Caracas with his team to have lunch with the Venezu…