Transform positional argument into keyword argument

From pandas 2.0 any only accepts keyworkd arguments
ref pandas-dev/pandas#44896

Author: molliegpt-bot

feature_engine/imputation/drop_missing_data.py

@@ -205,7 +205,7 @@ def return_na_data(self, X: pd.DataFrame) -> pd.DataFrame:
             idx = pd.isnull(X[self.variables_]).mean(axis=1) >= self.threshold
             idx = idx[idx]
         else:
-            idx = pd.isnull(X[self.variables_]).any(1)
+            idx = pd.isnull(X[self.variables_]).any(axis=1)
             idx = idx[idx]
 
         return X.loc[idx.index, :]