check_account_age key incorrect for AWS accounts

[nathan-williams-lightspeed]

The check for AWS account age uses the account ID as the key:

panther-analysis/rules/aws_cloudtrail_rules/aws_console_login_without_mfa.py

Line 55 in e45530f

is_new_account = check_account_age(event.get("recipientAccountId"))

However when a new account is created, the key is "new_account - " + account_id:

panther-analysis/rules/indicator_creation_rules/new_aws_account_logging.py

Line 33 in e45530f

"new_account - " + account_id, [account_event_id], expiry_time.strftime("%s")

[arielkr256]

Fixed by #1237