update default file version to v2.1

hiteshhedwig · hiteshhedwig · commit 3a85f358b2e5 · 2023-12-06T21:14:23.000+05:30
diff --git a/can/io/trc.py b/can/io/trc.py
@@ -268,7 +268,7 @@ def __init__(
         self,
         file: Union[StringPathLike, TextIO],
         channel: int = 1,
-        fileversion : int = TRCFileVersion.V1_1,
+        fileversion : int = TRCFileVersion.V2_1,
         **kwargs: Any,
     ) -> None:
         """
