The test test_move_script_doesnt_change_hash fails because it runs the 'python' command while the python executable has a different name

### Describe the bug

Tests should use the same pythin path as they are launched with, which in the case of FreeBSD is /usr/local/bin/python3.11

Failure:
```
if err_filename is not None:
> raise child_exception_type(errno_num, err_msg, err_filename)
E FileNotFoundError: [Errno 2] No such file or directory: 'python'
```

### Steps to reproduce the bug

regular test run using PyTest

### Expected behavior

n/a

### Environment info

FreeBSD 14.1