mod: update version of github.com/elastic/go-libaudit to v2.4.0

[efd6]

Proposed commit message

See title.

Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have made corresponding change to the default configuration files
• I have added tests that prove my fix is effective or that my feature works
• I have added an entry in CHANGELOG.next.asciidoc or CHANGELOG-developer.next.asciidoc.

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How to test this PR locally

Related issues

• Closes Add support for saddr_fam filter to AuditBeat #36776

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Pinging @elastic/security-external-integrations (Team:Security-External Integrations)

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• Start Time: 2023-10-25T21:49:10.681+0000

• Duration: 99 min 41 sec

Test stats 🧪

Test	Results
Failed	0
Passed	28618
Skipped	2015
Total	30633

💚 Flaky test report

Tests succeeded.

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