Some third-party applications require the root CA certificate to be imported to add a public cloud vendor. Wasabi uses DigiCert for its certificates.
Root CA: DigiCert Global Root G2
Intermediate: DigiCert TLS RSA SHA256 2020 CA1
Both certificates are provided by DigiCert (https://www.digicert.com/kb/digicert-root-certificates.htm). In addition, they are both attached to the bottom of this KB for download.