Address Timeout Error
With the catalog now expanded, the time to read and build the Catalog-To-XPublish server has increased, beyond the 30 second start-up allowed by the default settings. This PR includes two changes.
- increases gunicorn worker timeout limit to 500 seconds to allow startup to complete fully (that process currently take around 120 seconds).
- updates the Catalog-To-Xpublish version to the latest release, which includes performance optimizations for reading and iterating through the STAC catalog.