fix formatting with ruff

Author: rettinghaus

edtf/parser/grammar.py

@@ -322,7 +322,9 @@ def f(toks):
 
 
 # (* *** L2 Season *** *)
-seasonL2Number = one_of("21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41")
+seasonL2Number = one_of(
+    "21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41"
+)
 l2season = year + "-" + seasonL2Number("season")
 Level2Season.set_parser(l2season)