[CPDEV-96929] Support of granular 3rd party updates per specific Kubernetes version

[ilia1243]

Description

• Support of granular 3rd party updates per specific Kubernetes version not touching the compatibility map of higher Kubernetes versions.
• Prohibit upgrade to not the latest supported patch version to avoid accidental downgrade of plugins or thirdparties.

Solution

• Added validation of upgrade_plan to allow upgrade only to the latest patch versions (either intermediate or target).
• Changed validation in scripts/thirdparties/sync.py to check that plugins are not downgraded only if upgrade is possible.

Breaking changes

Upgrade to intermediate patch versions is no longer allowed.

Test Cases

TestCase 1

Granular upgrade of 3rd-parties.

Steps:

1. Embed new Kubernetes patch versions, and upgrade compatible plugins only for new Kubernetes versions.
2. Run scripts/thirdparties/sync.py

Results:

Before	After
Plugins should have non-decreasing versions error is raised	Synchronization is performed successfully

TestCase 2

Prohibit upgrade to intermediate patch version.

Steps:

1. Try upgrading Kubernetes from v1.27.8 to v1.28.0

Results:

Before	After
Upgrade is successful	New version "v1.28.0" is not the latest supported patch version "v1.28.4" error is raised

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Integration CI passed
• Unit tests. If Yes list of new/changed tests with brief description
• There is no merge conflicts

Unit tests

test_sync.py, test_upgrade_py - added tests to cover new functionality.