I changed my gradle properties to reflect the 1.21.5 values and now the IDE can't resolve this import:
import net.fabricmc.fabric.api.client.rendering.v1.BlockRenderLayerMap;
I've looked at other peoples projects and the only difference I could see in the gradle settings was the loom version, which I've also tried updating, but I still get the same error.
I'm new to programming in IntelliJ - spent my entire life in the MS world, so some of this confounds me, so be kind please. I struggle more with environmental issues than the programming, but I'm sure they will once I start to do more challenging things.