Clean CKAN BEAKER_CACHE on a regular basis

[FuhuXia]

We need to repeat the what we did in #4657 on a semi-annual schedule to reduce the size of BEAKER_CACHE table in catalog app.

Steps:

1. Enable space SSH for prod space
2. connect to catalog-db (need Service Connect CF plugin installed.

 cf connect-to-service catalog-admin catalog-db

3. Run query

DELETE FROM beaker_cache WHERE created < CURRENT_TIMESTAMP - INTERVAL '2 day';

This query will take a few mins to complete. If the connection is disconnected due to catalog-admin gets restarted, the query will continue on its own. You can verify it when you see the oldest CREATED is a two days ago instead of 6 months ago by query

 SELECT CREATED FROM beaker_cache ORDER BY id LIMIT 1;
 SELECT COUNT(*) FROM beaker_cache;

4. Set the milestone to next 6 month and put the ticket back to icebox,

[FuhuXia]

Done on 2024-11-26. Setting milestone to May 2025.