Zync not working with custom certificate stores

We have a customer who is still getting the below error after configuring Zync to support custom CA certificates

{"adapter":"Que","job":"ProcessIntegrationEntryJob","priority":null,"queue":"default","arguments":["gid://zync/Integration::Keycloak/2","gid://zync/Model/14"],"action":"perform","duration":117.62,"exception":"Keycloak::AuthenticationError","error":"Keycloak::AuthenticationError: SSL_connect returned=1 errno=0 state=error: certificate verify failed","metadata":{"faraday":

{"uri":"https://sso.apps.example.com/auth/realms/3scale/"}

}}

The certs are working fine from inside the POD. We can even create a new client using the same .pem file.