CI: Fix race conditions and run tests with -race flag

[ajnavarro]

Description

-race flag is currently deactivated on our CI due to some race conditions on the code. Fix these race conditions and set the flag for all tests.

[DIGIX666]

Hi @ajnavarro
I've started trying to solve this issues
When do you have a time, can you check my Draft PR to see if I'm going in the right direction please 🙏🏼