The OCSP verification specs began failing recently as a result of Let's Encrypt no longer supporting OCSP. The Atlas certs thus no longer include OCSP endpoints, which breaks an assumption in the specs.

See: https://github.com/mongodb/mongo-ruby-driver/blob/dc0865cf9aabadd1edb652446b0bd223079c8b37/spec/integration/ocsp_verifier_spec.rb#L348-L351

If we want to keep that test (which I think has value, as it confirms that the OCSP verifier is able to extract OCSP endpoints from the cert), we need to use a bespoke cert, rather than expecting the Atlas certs to include those endpoints.

See https://github.com/mongodb/specifications/tree/master/source/ocsp-support/tests#mock-ocsp-responder-testing-suite – which indicates where we can find appropriate certificates to use for the OCSP tests.