Grammy award-winning US rapper Young Thug, 33, pleaded guilty on Thursday to multiple gang-related charges, bringing a surprise end to his criminal trial in Atlanta. The rapper, whose real name is Jeffery Williams, was sentenced to 40 years in prison, but in exchange for his guilty plea and time served he was released. He was arrested in 2022 in Atlanta, in the US state of Georgia, and his trial was the longest in Georgia history, according to press reports. Instead of decades in prison, Young Thug was given a 15-year probation period, which includes requirements that he stay away from weapons…