codedeploy-agent randomly fails to install on AL2023 (can't create transaction lock on /var/lib/rpm/.rpm.lock)

Hi!

I'm installing codedeploy-agent at the very end of my user_data content:

wget https://aws-codedeploy-eu-west-1.s3.eu-west-1.amazonaws.com/latest/install; chmod +x ./install; ./install auto

However this fails from time to time on my amazon linux 2023 instance:

```
2024-07-24T21:55:33+0200 DEBUG --> Starting dependency resolution
2024-07-24T21:55:33+0200 DEBUG ---> Package codedeploy-agent.noarch 1.7.0-92 will be installed
2024-07-24T21:55:33+0200 DEBUG --> Finished dependency resolution
2024-07-24T21:55:33+0200 DDEBUG timer: depsolve: 118 ms
2024-07-24T21:55:33+0200 INFO Dependencies resolved.
2024-07-24T21:55:33+0200 INFO ================================================================================
Package Architecture Version Repository Size
================================================================================
Installing:
codedeploy-agent noarch 1.7.0-92 @commandline 2.8 M

Transaction Summary
================================================================================
Install 1 Package

2024-07-24T21:55:33+0200 INFO Total size: 2.8 M
2024-07-24T21:55:33+0200 INFO Installed size: 13 M
2024-07-24T21:55:33+0200 INFO Downloading Packages:
2024-07-24T21:55:33+0200 INFO Running transaction check
2024-07-24T21:55:33+0200 INFO Transaction check succeeded.
2024-07-24T21:55:33+0200 INFO Running transaction test
2024-07-24T21:55:34+0200 INFO Transaction test succeeded.
2024-07-24T21:55:34+0200 DDEBUG timer: transaction test: 788 ms
2024-07-24T21:55:34+0200 INFO Running transaction
2024-07-24T21:55:34+0200 DEBUG RPMDB altered outside of YUM.
2024-07-24T21:55:34+0200 DDEBUG RPM transaction start.
2024-07-24T21:55:34+0200 DDEBUG RPM transaction over.
2024-07-24T21:55:34+0200 CRITICAL RPM: error: can't create transaction lock on /var/lib/rpm/.rpm.lock (Resource temporarily unavailable)
2024-07-24T21:55:34+0200 DDEBUG Cleaning up.
2024-07-24T21:55:34+0200 SUBDEBUG
Traceback (most recent call last):
File "/usr/lib/python3.9/site-packages/dnf/cli/main.py", line 67, in main
return _main(base, args, cli_class, option_parser_class)
File "/usr/lib/python3.9/site-packages/dnf/cli/main.py", line 106, in _main
return cli_run(cli, base)
File "/usr/lib/python3.9/site-packages/dnf/cli/main.py", line 130, in cli_run
ret = resolving(cli, base)
File "/usr/lib/python3.9/site-packages/dnf/cli/main.py", line 176, in resolving
base.do_transaction(display=displays)
File "/usr/lib/python3.9/site-packages/dnf/cli/cli.py", line 246, in do_transaction
tid = super(BaseCli, self).do_transaction(display)
File "/usr/lib/python3.9/site-packages/dnf/base.py", line 1034, in do_transaction
tid = self._run_transaction(cb=cb)
File "/usr/lib/python3.9/site-packages/dnf/base.py", line 1153, in _run_transaction
raise dnf.exceptions.Error(msg)
dnf.exceptions.Error: Could not run transaction.
2024-07-24T21:55:34+0200 CRITICAL Error: Could not run transaction.
```

Comienza con el script de instalación descargado y su punto de entrada para la instalación de paquetes; después, reproduce el comando durante la ejecución de user-data de Amazon Linux 2023. Investiga el fallo de bloqueo de transacción de DNF/RPM que aparece en los logs; se considerará terminado cuando la instalación intermitente ya no se aborte con el error de bloqueo por recurso no disponible.

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