Dave McNary Film ReporterSAG-AFTRA’s funds held in trust for others have increased by less than $1 million to $215.6 million since last year, according to the union’s latest filing with the federal government.The miniscule gain, following a 9.4% jump last year, is a probable sign of the impact of the industry’s production halt that took place in March due to the COVID-19 pandemic.Those funds have been at the center of a long-running dispute, dating back to a 2007 suit filed by the late Ken