Update bids.py

Author: tsalo

src/smriprep/utils/bids.py

@@ -59,7 +59,7 @@ def collect_derivatives(
         qry_base['session'] = session_id
 
     for key, qry in spec['baseline'].items():
-        qry |= qry_base
+        qry = {**qry, **qry_base}
         item = layout.get(**qry)
         if not item:
             continue
@@ -85,7 +85,7 @@ def collect_derivatives(
             transforms.setdefault(_space, {})[key] = item[0] if len(item) == 1 else item
 
     for key, qry in spec['surfaces'].items():
-        qry |= qry_base
+        qry = {**qry, **qry_base}
         item = layout.get(return_type='filename', **qry)
         if not item or len(item) != 2:
             continue