chore(ci): do not default to `tracing` mode in jobs execution

[gustavovalverde]

Motivation

Some jobs are hard to analyze as some variables are showing their values by default (which in some cases is the full log), multiple times in a single step.

If we'd like to debug with tracing, we can re-run a job with debugging on.

Solution

• Remove the shell option with -x in most of the integration testing jobs

Tests

• Tests should pass in this PR

PR Author's Checklist

• [x] The PR name will make sense to users.
• [x] The PR provides a CHANGELOG summary.
• [x] The solution is tested.
• [x] The documentation is up to date.
• [x] The PR has a priority label.

PR Reviewer's Checklist

• [ ] The PR Author's checklist is complete.
• [ ] The PR resolves the issue.