Sort import order in new unit tests to fix failing pipeline

tests/test_fir_filters_dask.py

 """Unit tests for the module fir_filters_dask"""
 
-import numpy as np
 import dask.array as da
+import numpy as np
 import pytest
 
+from lisainstrument.fir_filters_dask import make_filter_fir_dask
 from lisainstrument.fir_filters_numpy import (
     DefFilterFIR,
     EdgeHandling,
     make_filter_fir_numpy,
 )
-from lisainstrument.fir_filters_dask import make_filter_fir_dask
 
 
 def test_filter_dask_fir():