[TASK] Make Github CI to use cva6.py

[MarioOpenHWGroup]

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Task Description

Currently, the Github CI utillizes the Makefile directly with verilator for running the tests. We should move to verif/sim/cva6.py to standarize the way of executing cva6.

Required Changes

Edit github CI yamls to use cva6.py

Current Status

Currently Makefile is directly used with verilator

Risks

No response

Prerequisites

No response

KPI (KEY Performance Indicators)

No response

Description of Done

Transition to cva6.py

Associated PRs

No response