message: feat: add TXT as default CSV extension
diff: @@ -370,7 +370,7 @@ SUPERSET_WEBSERVER_DOMAINS = None
  # Allowed format types for upload on Database view
  EXCEL_EXTENSIONS = {"xlsx", "xls"}
  -CSV_EXTENSIONS = {"csv", "tsv"}
  +CSV_EXTENSIONS = {"csv", "tsv", "txt"}
  ALLOWED_EXTENSIONS = {*EXCEL_EXTENSIONS, *CSV_EXTENSIONS}
  # CSV Options: key/value pairs that will be passed as argument to DataFrame.to_csv
  