update sqlx cache in pgmq-rs

[ChuckHend]

v1.2.0 of the extension changed the order of the columns returned by pgmq.list_queues(). I like the new way better, and is only an issue for the sqlx cache for the Rust client. Quick fix in this PR.

old:

 queue_name | is_partitioned | is_unlogged |          created_at           
------------+----------------+-------------+-------------------------------
 x          | f              | f           | 2024-05-21 18:53:45.589962+00

new:

 queue_name |          created_at           | is_partitioned | is_unlogged 
------------+-------------------------------+----------------+-------------
 x          | 2024-05-21 18:56:11.791476+00 | f              | f

[ChuckHend]

related #217

[v0idpwn]

Maybe this should be considered a breaking change from the extension (hence, a bug) and fixed in 1.2.1?

Approving in case you disagree