fix(terraform): CKV_AWS_339 - Update supported EKS platform versions

[omnibrian]

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Description

Update list of supported EKS platform versions to remove versions that are no longer receiving extended support (1.25 and 1.26).

New/Edited policies (Delete if not relevant)

• CKV_AWS_339

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my feature, policy, or fix is effective and works
• New and existing tests pass locally with my changes

[omnibrian]

Looking at the open PRs, I do see one that is trying to add 1.33 to the EKS platform versions already but is over a month old. Let me know if you'd rather just include that and I can close this PR.

Edit: Looks like adding 1.33 has been merged into main, edited to just be removing the older unsupported versions of EKS