changed exclusion logic slightly

Author: Arne Caratti

opentelemetry-sdk/src/opentelemetry/sdk/_logs/_internal/__init__.py

@@ -421,11 +421,17 @@ def __init__(
 
     @staticmethod
     def _get_attributes(record: logging.LogRecord) -> Attributes:
-        private_record_attrs = ("args", "msg", "stack_info", "exc_info")
+        private_record_attrs = (
+            "args",
+            "msg",
+            "stack_info",
+            "exc_info",
+            "exc_text",
+        )
         attributes = {
             k: v
             for k, v in vars(record).items()
-            if k not in private_record_attrs and v is not None
+            if k not in private_record_attrs
         }
         if record.exc_info:
             exc_type = ""