Update optimism-ci.yaml

.github/workflows/optimism-ci.yaml

@@ -54,6 +54,7 @@ jobs:
       - name: 'Run Kontrol'
         shell: bash
         run: |
+          set -xeu pipefail
           # Run the following in the running docker container
           pushd optimism/packages/contracts-bedrock > /dev/null
           # Need to checkout submodules, GH action doesn't do this properly.