unit test depends on expired pre-generated cert

[desimone]

What happened?

Unit test failed.

What did you expect to happen?

Unit tests to pass.

How'd it happen?

go test ./...

--- FAIL: TestVerifyAndroidSafetyNetAttestationStatement (0.09s)
    --- FAIL: TestVerifyAndroidSafetyNetAttestationStatement/valid (0.09s)
        --- FAIL: TestVerifyAndroidSafetyNetAttestationStatement/valid/AndroidSafetyNet (0.09s)
            /Users/bdd/webauthn/attestation_statement_android_safety_net_test.go:19: 
                	Error Trace:	attestation_statement_android_safety_net_test.go:19
                	Error:      	Received unexpected error:
                	            	invalid attestation statement: x509: certificate has expired or is not yet valid: current time 2021-12-02T10:05:31-08:00 is after 2021-10-17T13:13:41Z
                	Test:       	TestVerifyAndroidSafetyNetAttestationStatement/valid/AndroidSafetyNet
FAIL
coverage: 74.6% of statements
FAIL	github.com/pomerium/webauthn	0.227s
FAIL

What's your environment like?

go version go1.17.2 darwin/arm64

Additional context

Add any other context about the problem here.