Selena Gomez sold her Encino, California, mansion on Tuesday for $5.4 million. The Texas-born singer and actress, 34, reached an agreement to sell the property after initially putting it on the market in May with a starting price of $6.49 million. According to TMZ, the mansion has six bedrooms, 10 bathrooms and an area of about 1,068 square feet. The “Only Murders in the Building” actress, who is married to Benny Blanco, 38, bought the property …