List outputs is eating ExpiredToken messages and possibly others

[alexharv074]

Subject of the issue

I have noticed that when my auth token expires, e.g.

# aws s3 ls 
An error occurred (ExpiredToken) when calling the AssumeRole operation: The security token included in the request is expired

Some Sceptre commands such as list outputs eat this and fail silently. Others don't. For example:

# sceptre --merge-vars --dir=network --var-file=/app/platform-sceptre/stacks/../data/test/common-env.yaml --var-file=/app/platform-sceptre/stacks/../data/test/network-e2e.yaml launch network.yaml -y 
[2024-03-23 10:08:08] - vpc - Launching Stack
"An error occurred (ExpiredToken) when calling the AssumeRole operation: The security token included in the request is expired"

Compared to

# sceptre --merge-vars --dir=network --var-file=/app/platform-sceptre/data/test/common-env.yaml --var-file=/app/platform-sceptre/data/test/network.yaml list outputs network.yaml --export=envvar 
# echo $? 
0

Your environment

• version of sceptre (sceptre --version) latest
• version of python (python --version) 3.10
• which OS/distro Ubuntu

Steps to reproduce

See above.

Expected behaviour

Should see that the token expired.

Actual behaviour

No output.