Update API client for ECE 3.5.2 / ms-81.

[gigerdo]

Description

Updating the APIs for ECE 3.5.2. This change is only updating the autogenerated files.

Related Issues

Motivation and Context

There hasn't been any release for the current ECE version of 3.5.2 yet.

How Has This Been Tested?

Types of Changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Refactoring (improves code quality but has no user-facing effect)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Documentation

Readiness Checklist

• [x] My code follows the code style of this project
• [x] My change requires a change to the documentation
• [x] I have updated the documentation accordingly
• [ ] I have added tests to cover my changes
• [x] All new and existing tests passed

[dimuon]

@gigerdo , does it make sense to mention an issue that the PR addresses?

[gigerdo]

There is no direct issue this addresses, just keeping the SDK up-to-date with the currently released ECE / Elastic Cloud APIs.