main.py: move check_risk to the language agnostic model and enable it

[elukey]

The ML and Research team have worked a lot on the Revert Risk Language Agnostic model, it should support the Serobot's use case and return better predictions than ORES. The multi-lingual model is still under performing so the Research team discourages its use, for the moment.

Update the check_risk function to use language agnostic, and use it instead the checkORES one.

Issue: #5

[elukey]

@dennistobar Hi! Lemme know if you are willing to give it another try, the language agnostic model is more performant than the multi lingual one, and according to the Research team it should be ok for this use case (and give more accurate prediction than the ORES models). Thanks in advance for the patience :)