feat(cli): display warning when --role-arn is used with gc command

[dgandhi62]

The gc command currently ignores the --role-arn parameter and always uses the user's default credentials, regardless of whether a role ARN is specified. This can potentially lead to silent failures, permission issues, as well as a bad user experience due to confusion.

This pr adds a check to throw a warning when the --role-arn parameter is used in the gc command. This helps improve user experience and avoid mismanaged expectations.

A consideration to throw an error was made. However, this could be a breaking change for existing ci/cd pipeline users. Therefore, this idea was discarded

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.49%. Comparing base (75b8256) to head (8170fb3).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #893      +/-   ##
==========================================
+ Coverage   83.23%   83.49%   +0.25%     
==========================================
  Files          71       71              
  Lines       10396    10401       +5     
  Branches     1306     1315       +9     
==========================================
+ Hits         8653     8684      +31     
+ Misses       1705     1679      -26     
  Partials       38       38              

Flag	Coverage Δ
suite.unit	83.49% <100.00%> (+0.25%)	⬆️

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[iankhou]

Why not implement roleArn functionality instead?

[dgandhi62]

Why not implement roleArn functionality instead?

In the command documentation, roleArn is defined for when we invoke Cloudformation. gc seems to have some direct calls to s3/Ecr. I think there is scope for implementing this functionality but it might need a bigger discussion on the design implications. I can investigate this more and make an update later for this if needed, this should work as a primary fix meanwhile. Thanks for the feedback

[kaizencc]

what about a test?