point setup to release branch

Author: bfineran

integrations/ultralytics-yolov5/setup_integration.sh

@@ -6,5 +6,5 @@
 
 git clone https://github.com/neuralmagic/yolov5.git
 cd yolov5
-git checkout update-6.1
+git checkout release/0.12
 pip install -r requirements.txt