Improve CI pipelines

* Prepare and upload JUnit report for tests execution
* Simplify pre-commit job
* Replace dependencies with needs to unblock jobs

Signed-off-by: Anton Bondarenko <anton.bondarenko@arm.com>

Reviewed-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Approved-by: Jakub Sujak <jakub.sujak@arm.com>