Azure CLI can't be installed in latest Pulumi docker image

[durist]

What happened?

The docs state that the Debian images are based on the buster release, but that no longer appears to be the case; here's the release info for the current image:

$ lsb_release -a
No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 12 (bookworm)
Release:	12
Codename:	bookworm

This makes it impossible to install the azure CLI in the image. Attempting to install from Microsoft's package fails with this error:

The following packages have unmet dependencies:
 azure-cli : Depends: libffi7 (>= 3.3~20180313) but it is not installable
             Depends: libssl1.1 (>= 1.1.1) but it is not installable
E: Unable to correct problems, you have held broken packages.

This happens even when setting "AZ_REPO=bullseye" per Microsoft's docs: https://learn.microsoft.com/en-us/cli/azure/install-azure-cli-linux?pivots=apt

Expected Behavior

az CLI should be installable in Pulumi Docker image

Steps to reproduce

https://learn.microsoft.com/en-us/cli/azure/install-azure-cli-linux?pivots=apt

Output of pulumi about

$ pulumi about
CLI
Version 3.72.2
Go Version go1.20.5
Go Compiler gc

Plugins
NAME VERSION
azure-native 1.103.0
azuread 5.38.0
kubernetes 3.29.1
kubernetes-ingress-nginx 0.0.10
python unknown

Host
OS debian
Version 12.0
Arch x86_64

This project is written in python: executable='/usr/local/bin/python3' version='3.9.17
'

Backend
Name pulumi.com
URL https://app.pulumi.com/durist
User durist
Organizations durist, UCAR

Dependencies:
NAME VERSION
pip 23.1.2
pulumi-azure-native 1.103.0
pulumi-azuread 5.38.0
pulumi-kubernetes-ingress-nginx 0.0.10
setuptools 68.0.0
sshkey-tools 0.10.1
wheel 0.40.0

Additional context

No response

Contributing

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[dixler]

Hey, I'm checking with the author of the commit for some more context around the change, but it looks to be introduced in this change:

cdb8187