EC2でcomposer installするとConnection timed outになる

質問内容

EC2でLaravelアプリケーションをデプロイしようとcomposer installをすると、以下のような文言が出てインストール作業が完了できずに困っております。
どなたか同様の現象で解決された方、またはアドバイスがあればお力をお借りできないでしょうか。

[ec2-user@ip-10-0-0-100 html]$ composer install
No composer.lock file present. Updating dependencies to latest instead of installing from lock file. See https://getcomposer.org/install for more information.
Loading composer repositories with package information
https://repo.packagist.org could not be fully loaded (curl error 28 while downloading https://repo.packagist.org/packages.json: Failed to connect to repo.packagist.org port 443 after 5207 ms: Connection timed out), package information was loaded from the local cache and may be out of date

In CurlDownloader.php line 377:

  curl error 28 while downloading https://repo.packagist.org/p2/anhskohbo/no-captcha.json: Failed to connect to
  repo.packagist.org port 443 after 5206 ms: Connection timed out

[ec2-user@ip-10-0-0-100 html]$

前提

・EC2の前にALBが配置されています
・php:8.0.18
・composer: 2.3.7

・インバウンドルール

ソース	タイプ	ポート
0.0.0.0/0	HTTP	80
自宅のIP/32	SSH	22

・アウトバウンドルール

ソース	タイプ	ポート
0.0.0.0/0	すべてのトラフィック	すべて

試したこと

■EC2がインターネットと通信できているか確認

[ec2-user@ip-10-0-0-100 html]$ nslookup getcomposer.org
Server:         10.0.0.2
Address:        10.0.0.2#53

Non-authoritative answer:
Name:   getcomposer.org
Address: 54.36.53.46
Name:   getcomposer.org
Address: 2001:41d0:302:1100::8:104f

■curlで直接叩いてみて確認

## ダメ
[ec2-user@ip-10-0-0-100 html]$ curl -v https://repo.packagist.org
*   Trying 51.79.162.48:443...
*   Trying 2402:1f00:8001:73:::443...
* Immediate connect fail for 2402:1f00:8001:73::: Network is unreachable
^C
## ダメ
[ec2-user@ip-10-0-0-100 html]$ curl -v http://repo.packagist.org
*   Trying 51.79.162.48:80...
*   Trying 2402:1f00:8001:930:::80...
* Immediate connect fail for 2402:1f00:8001:930::: Network is unreachable
^C
## いける
[ec2-user@ip-10-0-0-100 html]$ curl -v https://www.google.co.jp
*   Trying 172.217.175.35:443...
* Connected to www.google.co.jp (172.217.175.35) port 443 (#0)

■composer diag でコケてる箇所を確認

[ec2-user@ip-10-0-0-100 html]$ composer diag
Checking composer.json: WARNING
require.aws/aws-sdk-php : unbound version constraints (*) should be avoided
Checking platform settings: OK
Checking git settings: OK
Checking http connectivity to packagist: FAIL
[Composer\Downloader\TransportException] curl error 28 while downloading http://repo.packagist.org/packages.json: Failed to connect to repo.packagist.org port 80 after 5207 ms: Connection timed out
Checking https connectivity to packagist: FAIL
[Composer\Downloader\TransportException] curl error 28 while downloading https://repo.packagist.org/packages.json: Failed to connect to repo.packagist.org port 443 after 5206 ms: Connection timed out
Checking github.com rate limit: OK
Checking disk free space: OK
Checking github.com rate limit: OK
Checking disk free space: OK
Checking pubkeys:
Tags Public Key Fingerprint: XXXX XXXXX XXXX XXXXX
Dev Public Key Fingerprint: XXXX XXXXX XXXX XXXXX
OK
Checking composer version: You are not running the latest stable version, run `composer self-update` to update (2.3.7 => 2.3.8)
Composer version: 2.3.7
PHP version: 8.0.18
PHP binary path: /usr/bin/php
OpenSSL version: OpenSSL 1.0.2k  26 Jan 2017
cURL version: 7.79.1 libz 1.2.7 ssl OpenSSL/1.0.2k-fips
zip: extension present, unzip present, 7-Zip not available

どうぞよろしくお願い致します。