SangomaCRM REST API does not use the OS's trusted CA store

After the Sectigo certificate expiry described here, my webhooks to a destination using one of those certificates began failing. I removed the problematic certificate from the destination, and everything now looks good when running curl or openssl from the console, however /var/log/asterisk/sangomacrm.log still shows:

RestAPI: HTTP Post Received Response="cURL error 60: Peer's Certificate issuer is not recognized." [] []

This leads me to believe it is looking at a different certificate store to get its trusted CAs than the OS or curl or openssl run from the command line, since they work fine with the new CA certificate.