Fix import sorting from recently merged PR

[mraspaud]

This PR fixes the sorting of the imports from #1678

[codecov]

Codecov Report

Merging #2284 (342b176) into main (f9c2070) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #2284   +/-   ##
=======================================
  Coverage   94.32%   94.32%           
=======================================
  Files         308      308           
  Lines       46168    46168           
=======================================
  Hits        43546    43546           
  Misses       2622     2622           

Flag	Coverage Δ
behaviourtests	4.61% <0.00%> (ø)
unittests	94.96% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
satpy/readers/meris_nc_sen3.py	100.00% <100.00%> (ø)
satpy/tests/reader_tests/test_meris_nc.py	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[coveralls]

Coverage remained the same at 94.908% when pulling 342b176 on mraspaud:fix-meris-isort into f9c2070 on pytroll:main.