[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

pydra/engine/tests/test_submitter.py

@@ -669,6 +669,7 @@ def to_tuple(x, y):
         with Submitter("cf") as sub:
             result = sub(wf)
 
+
 @mark.task
 def to_tuple(x, y):
     return (x, y)