Add quotes because yaml

templates/testreport/diff.yml

@@ -17,7 +17,7 @@
     # So, first determine the previous pipeline.
     - LAST_PIPELINE_SUCCESS=$(gitlab --output json project-pipeline list --project-id $CI_PROJECT_ID --ref $TEST_REPORT_DIFF_REF --scope finished --status success | jq 'first.id')
     - LAST_PIPELINE_FAILED=$(gitlab --output json project-pipeline list --project-id $CI_PROJECT_ID --ref $TEST_REPORT_DIFF_REF --scope finished --status failed | jq 'first.id')
-    - LAST_PIPELINE=$(( LAST_PIPELINE_SUCCESS > LAST_PIPELINE_FAILED ? LAST_PIPELINE_SUCCESS : LAST_PIPELINE_FAILED ))
+    - 'LAST_PIPELINE=$(( LAST_PIPELINE_SUCCESS > LAST_PIPELINE_FAILED ? LAST_PIPELINE_SUCCESS : LAST_PIPELINE_FAILED ))'
     - echo "Previous pipeline on ${TEST_REPORT_DIFF_REF} was ${LAST_PIPELINE}."
     # Determine the previous job.
     - LAST_JOB=$(gitlab --output json project-pipeline-job list --project-id $CI_PROJECT_ID --pipeline-id $LAST_PIPELINE | jq ".[] | select(.name==\"${TEST_REPORT_JOB}\") | .id")