[Request] Update the cypher algorithms used by Elastic Agent

## Description
**It would be beneficial to have somewhere in our documentation for Agent a list of cryptographic algorithms used by Elastic Agent. This information is often requested when teams are auditing the product.**

## Collaboration
*(Choose the expected collaboration model and delete the others.)*

- The product team will provide the initial content and the docs team will edit / review
- The docs team will define with product team the structure and location, and the product team will provide the initial content
- Other (please describe)

*@nimarezainia*

**Contact Person:**

## Suggested Target Release

*(Let us know if this feature is needed for a specific release.)*

## Stakeholders

*(Please list any stakeholders for this issue.)*