fix(odbc): binary data was extracted as text

This commit modifies the null handling logic in the OdbcBridge by changing the method used to retrieve binary data from the cursor. The update ensures that the correct binary data is processed, enhancing the reliability of data fetching in ODBC connections.

Author: lovasoa

sqlx-core/src/odbc/connection/odbc_bridge.rs

@@ -456,7 +456,7 @@ where
         nulls: &mut Vec<bool>,
     ) {
         let mut buf = Vec::new();
-        nulls.push(cursor_row.get_text(col_index, &mut buf).is_err());
+        nulls.push(cursor_row.get_binary(col_index, &mut buf).is_err());
         vec.push(buf);
     }