Amazon Linux 2023 EC2 インスタンスの初回起動時にセキュリティアップデートは実行されますか

sh-4.2$ cat /etc/os-release
NAME="Amazon Linux"
VERSION="2"
ID="amzn"
ID_LIKE="centos rhel fedora"
VERSION_ID="2"
PRETTY_NAME="Amazon Linux 2"
ANSI_COLOR="0;33"
CPE_NAME="cpe:2.3:o:amazon:amazon_linux:2"
HOME_URL="https://amazonlinux.com/"
SUPPORT_END="2026-06-30"
sh-4.2$ cat /etc/cloud/cloud.cfg
# WARNING: Modifications to this file may be overridden by files in
# /etc/cloud/cloud.cfg.d

users:
 - default

disable_root: true
ssh_pwauth:   false

mount_default_fields: [~, ~, 'auto', 'defaults,nofail', '0', '2']
resize_rootfs: noblock
resize_rootfs_tmp: /dev
ssh_deletekeys:   true
ssh_genkeytypes:  ~
syslog_fix_perms: ~

datasource_list: [ Ec2, None ]
repo_upgrade: security
repo_upgrade_exclude:
 - kernel
 - nvidia*
 - cuda*

# Might interfere with ec2-net-utils
network:
  config: disabled

cloud_init_modules:
 - migrator
 - bootcmd
 - write-files
 - write-metadata
 - amazonlinux_repo_https
 - growpart
 - resizefs
 - set-hostname
 - update-hostname
 - update-etc-hosts
 - rsyslog
 - users-groups
 - ssh
 - resolv-conf

cloud_config_modules:
 - disk_setup
 - mounts
 - locale
 - set-passwords
 - yum-configure
 - yum-add-repo
 - package-update-upgrade-install
 - timezone
 - disable-ec2-metadata
 - runcmd

cloud_final_modules:
 - scripts-per-once
 - scripts-per-boot
 - scripts-per-instance
 - scripts-user
 - ssh-authkey-fingerprints
 - keys-to-console
 - phone-home
 - final-message
 - power-state-change

system_info:
  # This will affect which distro class gets used
  distro: amazon
  distro_short: amzn
  default_user:
    name: ec2-user
    lock_passwd: true
    gecos: EC2 Default User
    groups: [wheel, adm, systemd-journal]
    sudo: ["ALL=(ALL) NOPASSWD:ALL"]
    shell: /bin/bash
  paths:
    cloud_dir: /var/lib/cloud
    templates_dir: /etc/cloud/templates
  ssh_svcname: sshd

mounts:
 - [ ephemeral0, /media/ephemeral0 ]
 - [ swap, none, swap, sw, "0", "0" ]
# vim:syntax=yaml
sh-4.2$

sh-5.2$ cat /etc/os-release
NAME="Amazon Linux"
VERSION="2023"
ID="amzn"
ID_LIKE="fedora"
VERSION_ID="2023"
PLATFORM_ID="platform:al2023"
PRETTY_NAME="Amazon Linux 2023.9.20251208"
ANSI_COLOR="0;33"
CPE_NAME="cpe:2.3:o:amazon:amazon_linux:2023"
HOME_URL="https://aws.amazon.com/linux/amazon-linux-2023/"
DOCUMENTATION_URL="https://docs.aws.amazon.com/linux/"
SUPPORT_URL="https://aws.amazon.com/premiumsupport/"
BUG_REPORT_URL="https://github.com/amazonlinux/amazon-linux-2023"
VENDOR_NAME="AWS"
VENDOR_URL="https://aws.amazon.com/"
SUPPORT_END="2029-06-30"
sh-5.2$ cat /etc/cloud/cloud.cfg
# The top level settings are used as module
# and system configuration.
# A set of users which may be applied and/or used by various modules
# when a 'default' entry is found it will reference the 'default_user'
# from the distro configuration specified below
users:
   - default

# If this is set, 'root' will not be able to ssh in and they
# will get a message to login instead as the default $user
disable_root: true

mount_default_fields: [~, ~, 'auto', 'defaults,nofail', '0', '2']
resize_rootfs: noblock
resize_rootfs_tmp: /dev
ssh_pwauth:   false

# This will cause the set+update hostname module to not operate (if true)
preserve_hostname: false

# If you use datasource_list array, keep array items in a single line.
# If you use multi line array, ds-identify script won't read array items.
# Example datasource config
# datasource:
#    Ec2:
#      metadata_urls: [ 'blah.com' ]
#      timeout: 5 # (defaults to 50 seconds)
#      max_wait: 10 # (defaults to 120 seconds)

# The modules that run in the 'init' stage
cloud_init_modules:
 - migrator
 - seed_random
 - bootcmd
 - write-files
 - write-metadata
 - growpart
 - resizefs
 - disk_setup
 - mounts
 - set_hostname
 - update_hostname
 - update_etc_hosts
 - ca-certs
 - rsyslog
 - selinux
 - users-groups
 - ssh

# The modules that run in the 'config' stage
cloud_config_modules:
 - ssh-import-id
 - keyboard
 - locale
 - set-passwords
 - yum-variables
 - yum-add-repo
 - ntp
 - timezone
 - disable-ec2-metadata
 - runcmd

# The modules that run in the 'final' stage
cloud_final_modules:
 - package-update-upgrade-install
 - write-files-deferred
 - puppet
 - chef
 - mcollective
 - salt-minion
 - reset_rmc
 - refresh_rmc_and_interface
 - rightscale_userdata
 - scripts-vendor
 - scripts-per-once
 - scripts-per-boot
 - scripts-per-instance
 - scripts-user
 - ssh-authkey-fingerprints
 - keys-to-console
 - install-hotplug
 - phone-home
 - final-message
 - power-state-change

# System and/or distro specific settings
# (not accessible to handlers/transforms)
system_info:
   # This will affect which distro class gets used
   distro: amazon
   # Default user name + that default users groups (if added/used)
   default_user:
     name: ec2-user
     lock_passwd: True
     gecos: EC2 Default User
     groups: [wheel, adm, systemd-journal]
     sudo: ["ALL=(ALL) NOPASSWD:ALL"]
     shell: /bin/bash
   # Other config here will be given to the distro class and/or path classes
   paths:
      cloud_dir: /var/lib/cloud/
      templates_dir: /etc/cloud/templates/
   ssh_svcname: sshd
sh-5.2$