Use the latest Kali base AMI

[jsf9k]

🗣 Description

This pull request modifies the Packer code to use the latest version of the Kali base AMI.

💭 Motivation and context

Using the latest Kali base AMI:

• Puts us in a better place to integrate future versions of the Kali base AMI
• Means fewer package upgrades in our upgrade Ansible provider

🧪 Testing

I built and tested a Kali staging AMI in our staging COOL and verified that it functions as expected.

✅ Pre-approval checklist

• [x] This PR has an informative and human-readable title.
• [x] Changes are limited to a single goal - eschew scope creep!
• [x] All future TODOs are captured in issues, which are referenced in code comments.
• [x] All relevant type-of-change labels have been added.
• [x] I have read the CONTRIBUTING document.
• [x] These code changes follow cisagov code standards.
• [ ] All new and existing tests pass.

✅ Pre-merge checklist

• [ ] Finalize version.

✅ Post-merge checklist

• [ ] Create a release.

[jsf9k]

The build failures are because of TheWover/donut#158. Once that PR is merged this one should build cleanly as well.