fix TLS tests on newer go versions and MacOS #1191
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The TLS tests in
ssl_test.goassert that specific errors are reported for specific situations. This fails on newer (1.20+) versions of go sincetls.CertificateVerificationErroris returned instead of the expected, contrary to older versions wherex509.UnknownAuthorityErrororx509.HostnameErrorwould be returned.This maintains the same assertions on go < 1.20, and allows for the new error on go >= 1.20.
In addition to that, on MacOS the error string
x509: “postgres” certificate is not standards compliantis returned instead of any of these, this seems to be due to the version of OpenSSL provided by MacOS, see golang/go#51991 for details.