Fixed linting.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>
3 jobs for v0.18.12 in 10 minutes (queued for 21 minutes and 11 seconds)
latest
Status Job ID Name Coverage
  Test
passed #50873
test_gms_preprocessing

00:09:20

63.0%
passed #50874
test_styles

00:00:20

 
  Deploy
passed #50875
deploy_pypi

00:00:19