fix(azure): skip grater then criterions

[DmitriyLewen]

Description

Microsoft started using multiple criterion in definition:

<criteria operator="AND">
  <criterion comment="Package golang is earlier than 1.20.7-1, affected by CVE-2023-29409" test_ref="oval:com.microsoft.azurelinux:tst:52881000"/>
  <criterion comment="Package golang is greater than 0.0.0, affected by CVE-2023-29409" test_ref="oval:com.microsoft.azurelinux:tst:52881003"/>
</criteria>

Adding support for multiple criteria (#313) requires time to review and test.

So this PR adds a custom MarshalJson to store only one earlier than criterion to fix the problem with building trivy-db now.

test run - https://github.com/DmitriyLewen/vuln-list-update/actions/runs/11854656796
trivy-db build test run - https://github.com/DmitriyLewen/trivy-db/actions/runs/11855682567/job/33040403541

  "Criteria": {
    "Criterion": {
      "Comment": "Package golang is earlier than 1.20.7-1, affected by CVE-2023-29409",
      "TestRef": "oval:com.microsoft.azurelinux:tst:52881000"
    },
    "Operator": "AND"
  }

[DmitriyLewen]

closed in favor of #313