Fix CI error message in CI

[alamb]

An error started happening after I merged #1318

I believe it is a logical conflict with #1319

Here is an example failure: https://github.com/sqlparser-rs/sqlparser-rs/actions/runs/9838692665/job/27159117248?pr=1314

---- parse_trailing_comma stdout ----
thread 'parse_trailing_comma' panicked at tests/sqlparser_common.rs:8969:5:
assertion failed: `(left == right)`

Diff < left / right > :
 ParserError(
<    "Expected: a privilege keyword, found: ON",
>    "Expected a privilege keyword, found: ON",
 )