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

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

Author: pre-commit-ci[bot]

linopy/common.py

@@ -510,7 +510,7 @@ def group_terms_polars(df: pl.DataFrame) -> pl.DataFrame:
     df = df.group_by(by, maintain_order=True).agg(agg_list)
     return df
 
-  
+
 def maybe_group_terms_polars(df: pl.DataFrame) -> pl.DataFrame:
     """
     Group terms only if there are duplicate (labels, vars) pairs.