Update pyiceberg/io/pyarrow.py

Co-authored-by: Fokko Driesprong <fokko@apache.org>

Author: rambleraptor

pyiceberg/io/pyarrow.py

@@ -1306,7 +1306,7 @@ def primitive(self, primitive: pa.DataType) -> PrimitiveType:
             elif primitive.unit == "ns":
                 if self._downcast_ns_timestamp_to_us:
                     logger.warning("Iceberg does not yet support 'ns' timestamp precision. Downcasting to 'us'.")
-                elif self._format_version == 3:
+                elif self._format_version >= 3:
                     if primitive.tz in UTC_ALIASES:
                         return TimestamptzNanoType()
                     else: