While we see wormholes in fiction all the time, they aren't always addressed as Einstein–Rosen bridge. At this time, there are two examples in my mind which used exact term Einstein–Rosen bridge:
In Thor: Ragnarok (2017) movie, Banner addressed Devil's Anus as Einstein–Rosen bridge.
In an episode of Justice League (2001) or Justice League Unlimited (2004) TV series, Flash ran at lightspeed on Green Lantern's track to create a wormhole near Sun to suck something out of Sun. Here, Batman or someone in Justice League used the term Einstein–Rosen bridge.
When was the term Einstein–Rosen bridge first used in Science Fiction?