fix: update update_cloudfront resource count conditional

[botanical]

Summary: Summary of changes

Addresses VEDA-164: Develop amazing new feature

When trying to deploy with cloudfront_id set, I got this error:

╷
│ Error: Incorrect condition type
│ 
│   on main.tf line 275, in resource "null_resource" "update_cloudfront":
│  275:   count = coalesce(var.cloudfront_id, false) ? 1 : 0
│     ├────────────────
│     │ var.cloudfront_id is "redacted"
│ 
│ The condition expression must be of type bool.
╵

    }

Changes

• Update count conditional so that the expression is of type bool

PR Checklist

• Update CHANGELOG
• Unit tests
• Ad-hoc testing - Deploy changes and test manually
• Integration tests

[botanical]

Would we prefer the secret name to be CLOUDFRONT_ID or VEDA_CLOUDFRONT_ID?

[anayeaye]

Would we prefer the secret name to be CLOUDFRONT_ID or VEDA_CLOUDFRONT_ID?

In veda-deploy VEDA_ is prefixed to the variables parsed from cdk.out in scripts/generate_env_file.py so I think we should expect VEDA_ in tfvars for now?