Quaint humour and wholesome gags about retired life collide with a character-driven, Coen Brothers-inspired thriller in Thelma. In her best role since her Oscar nominated work in Alexander Payne’s Nebraska, June Squibb proves her chops as a late-career lead as the titular golden-ager. Lonely albeit confidently independent in Los Angeles, Thelma isn’t seen as a liability to her daughter (Parker Posey), her son-in-law (Clark Gregg), or her grandson (Fred Hechinger). However, a phone scam that…