Refactor: Do not touch the root logger

[gmuloc]

we should not modify the root logger but an anta logger. Right way to implement that would be to delete all handlers of the anta logger at the beginning of the function.
We used root logger to have logs from other libraries, maybe we could modify specific loggers (httpx, asyncio) instead when in ANTA_DEBUG mode.

Originally posted by @mtache in #981 (comment)