qa: auth regression tests are failing

Created by: davejrt

The auth regression/qa tests are failing in CI.

• GITHUB required 2FA, with 2FA disabled the device needs to be authenticated
• GITLAB failing due to the form not being filled in
• OKTA SAML callback not working correctly.

Full log and video available here: https://buildkite.com/sourcegraph/regression/builds/100#2648a70d-91bd-41f5-9890-057a7bc9dd7d/40-2703