[8.10]Updating elastic-autodiscovery version to 0.6.4

[gizas]

Related to elastic/elastic-agent@539bef4.

Aligning elastic-autodiscovery library version with elastic-agent repo to 0.6.4

Proposed commit message

• WHAT: Upgrade Elastic-autodiscovery library version to 0.6.4
• WHY: Keep it the same with elastic-agent in order to apply latest workaround

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.

Related issues

• Relates #Disable Deployment and Replicaset enrichment by default elastic-agent-autodiscover#62

[elasticmachine]

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Build stats

• Start Time: 2023-10-17T13:53:20.364+0000

• Duration: 82 min 5 sec

Test stats 🧪

Test	Results
Failed	0
Passed	28162
Skipped	2015
Total	30177

Steps errors

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x-pack/metricbeat-goIntegTest - mage goIntegTest

• Took 15 min 21 sec . View more details here
• Description: mage goIntegTest

Building Beats » Beats Packaging » PR-36878

• Took 0 min 0 sec . View more details here
• Description: null

💚 Flaky test report

Tests succeeded.

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