build: use uhal version v0.8.1.

Author: ericonr

build/docker-compose.yml

@@ -9,4 +9,4 @@ services:
     command: bash -c "build/uhal.sh && lnls-build-static-ioc afc-epics-ioc"
     environment:
       SKIP_CLEAN: 1
-      UHAL_VERSION: v0.8.0
+      UHAL_VERSION: v0.8.1