Fix Bug: Step failed but not exited with error (#17442)

### Description
Add "set -ex" in the script.


### Motivation and Context
Build failed but it still passed.

https://dev.azure.com/onnxruntime/onnxruntime/_build/results?buildId=1132003&view=logs&j=7536d2cd-87d4-54fe-4891-bfbbf2741d83&t=39e3f98f-7fe5-578c-20bd-5ae5a4590bda

tools/ci_build/github/azure-pipelines/linux-gpu-tensorrt-ci-pipeline.yml

@@ -85,7 +85,8 @@ jobs:
                   -e CCACHE_DIR=/cache \
                   onnxruntimetensorrt86gpubuild \
                   /bin/bash -c "
-                    cccache -s; \
+                    set -ex; \
+                    ccache -s; \
                       /opt/python/cp38-cp38/bin/python3 /onnxruntime_src/tools/ci_build/build.py \
                       --build_dir /build --cmake_generator Ninja \
                       --config Release \