Rollback ubuntu version for ubunut. (#7869)

Author: mc-nv

qa/common/gen_qa_model_repository

@@ -57,7 +57,7 @@ ONNX_OPSET=0
 # OPENVINO version
 OPENVINO_VERSION=2023.3.0
 
-UBUNTU_IMAGE=${UBUNTU_IMAGE:=ubuntu:24.04}
+UBUNTU_IMAGE=${UBUNTU_IMAGE:=ubuntu:22.04}
 PYTORCH_IMAGE=${PYTORCH_IMAGE:=nvcr.io/nvidia/pytorch:$TRITON_VERSION-py3}
 TENSORFLOW_IMAGE=${TENSORFLOW_IMAGE:=nvcr.io/nvidia/tensorflow:$TRITON_VERSION-tf2-py3}
 TENSORRT_IMAGE=${TENSORRT_IMAGE:=nvcr.io/nvidia/tensorrt:$TRITON_VERSION-py3}