[EA standalone] Add state_namespace data stream by default to the manifests

[constanca-m]

What does this PR do?

Add the state_namespace data stream by default to the EA manifest files.

This data stream was introduced in version 8.11.0.

The package version was also updated to 1.52.0 as the data stream was introduced there.

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/fragments using the changelog tool
• I have added an integration test or an E2E test

How to test this PR locally

1. Clone this branch.
2. Deploy EA standalone in version 8.11.0.
3. Check state_namespace metrics are there.

Related issues

Relates to #3100.

Screenshots

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• Start Time: 2023-11-13T15:44:59.715+0000

• Duration: 18 min 44 sec

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[gizas]

@constanca-m

cd elastic/elastic-agent/deploy/kubernetes
❯ make generate-k8s

This will update your /deploy/kubernetes/elastic-agent-standalone-kubernetes.yaml manifest that seems failing in your jenkins

[constanca-m]

Thank you @gizas :) I did not know that command

[constanca-m]

/test

[elastic-sonarqube]

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