auth0: fix event.type and event.category for failed authentication events

[efd6]

Proposed commit message

See title.

Checklist

• I have reviewed tips for building integrations and this pull request is aligned with them.
• I have verified that all data streams collect metrics or logs.
• I have added an entry to my package's changelog.yml file.
• I have verified that Kibana version constraints are current according to guidelines.
• I have verified that any added dashboard complies with Kibana's Dashboard good practices

Author's Checklist

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How to test this PR locally

Related issues

• Fixes [auth0]: some events are marked as event.type: indicator, without filling any other indicator related fields #12622

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Quality Gate passed

Issues
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0 Fixed issues
0 Accepted issues

Measures
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100.0% Coverage on New Code
0.0% Duplication on New Code

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Pinging @elastic/security-service-integrations (Team:Security-Service Integrations)

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Package auth0 - 1.20.1 containing this change is available at https://epr.elastic.co/package/auth0/1.20.1/