chore: Cleanup logger creation

[rumpelsepp]

Run:

    $ rg -l 'get_logger\(".*"\)' | xargs sed -iE 's|get_logger(".*")|get_logger(__file__)|'

get_logger(__file__) does what you expect without typos.

[ferdinandjarisch]

Hm, I seem to remember that in my initial draft of the logging-rework I already took this approach but you/Tobi somehow wanted the hardcoded values... 🤔

Anyhow, haven't tested this, but content-wise it looks fine to me!