Use trace mode in verify_cairo_listings.sh (#2717)

<!-- Reference any GitHub issues resolved by this PR -->

Closes #

## Introduced changes

<!-- A brief description of the changes -->

Allow trace mode while checking packages in `verify_cairo_listings.sh`

## Checklist

<!-- Make sure all of these are complete -->

- [x] Linked relevant issue
- [x] Updated relevant documentation
- [x] Added relevant tests
- [x] Performed self-review of the code
- [x] Added changes to `CHANGELOG.md`

scripts/verify_cairo_listings.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
-set -e
+set -xe
 
 for d in ./docs/listings/*; do (cd "$d" && scarb test); done