chore: fail GH action on script failure

script/make_utils/run_use_case_examples.sh

@@ -126,3 +126,8 @@ echo "Failures: ${#failed_examples[@]} examples"
 for example in "${failed_examples[@]}"; do
     echo "  - $example"
 done
+
+# Exit with a failure status if there are any failures
+if [[ ${#failed_examples[@]} -gt 0 ]]; then
+    exit 1
+fi