FIX: Fix raw_symbol name in databento-python

Author: threecgreen

databento/common/data.py

@@ -115,7 +115,7 @@ def get_deriv_ba_types(level: int) -> List[Tuple[str, Union[type, str]]]:
     ("currency", "S4"),  # 4 byte chararray
     ("settl_currency", "S4"),  # 4 byte chararray
     ("secsubtype", "S6"),  # 6 byte chararray
-    ("symbol", "S22"),  # 22 byte chararray
+    ("raw_symbol", "S22"),  # 22 byte chararray
     ("group", "S21"),  # 21 byte chararray
     ("exchange", "S5"),  # 5 byte chararray
     ("asset", "S7"),  # 7 byte chararray
@@ -215,7 +215,7 @@ def get_deriv_ba_types(level: int) -> List[Tuple[str, Union[type, str]]]:
     "currency",
     "settl_currency",
     "secsubtype",
-    "symbol",
+    "raw_symbol",
     "group",
     "exchange",
     "asset",