fix: update to README file, adjust iterator age alarm threshold and fix to vault data integrity check local lambda test script

[craigzour]

Summary | Résumé

• Updated README file to reflect changes in Localstack and AWS SAM CLI versions
• Adjusted threshold for new IteratorAge alarm
• Fixed issue in payload being passed to the Vault data integrity check lambda when running locally

[github-actions]

⚠ Terrform update available

Terraform: 1.6.2 (using 1.4.2)
Terragrunt: 0.53.0 (using 0.46.3)

[github-actions]

Staging: alarms

✅   Terraform Init: success
✅   Terraform Validate: success
✅   Terraform Format: success
✅   Terraform Plan: success
✅   Conftest: success

Plan: 0 to add, 1 to change, 0 to destroy

Show summary

CHANGE	NAME
update	aws_cloudwatch_metric_alarm.vault_data_integrity_check_lambda_iterator_age

Show plan

Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # aws_cloudwatch_metric_alarm.vault_data_integrity_check_lambda_iterator_age will be updated in-place
  ~ resource "aws_cloudwatch_metric_alarm" "vault_data_integrity_check_lambda_iterator_age" {
      ~ alarm_description         = "The Vault data integrity check lambda function is unable to keep up with the amount of events sent by the Vault DynamoDB stream" -> "Warning - Vault data integrity check lambda is unable to keep up with the amount of events sent by the Vault DynamoDB stream"
        id                        = "Vault data integrity check lambda iterator age"
        tags                      = {}
      ~ threshold                 = 30000 -> 90000
        # (16 unchanged attributes hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.

Warning: Argument is deprecated

  with module.athena_bucket.aws_s3_bucket.this,
  on .terraform/modules/athena_bucket/S3/main.tf line 8, in resource "aws_s3_bucket" "this":
   8: resource "aws_s3_bucket" "this" {

Use the aws_s3_bucket_logging resource instead

(and 8 more similar warnings elsewhere)

─────────────────────────────────────────────────────────────────────────────

Saved the plan to: plan.tfplan

To perform exactly these actions, run the following command to apply:
    terraform apply "plan.tfplan"

Show Conftest results

WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.notify_slack"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.alb_ddos"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.route53_ddos[0]"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_metric_alarm.vault_data_integrity_check_lambda_iterator_age"]

21 tests, 17 passed, 4 warnings, 0 failures, 0 exceptions