fix: aws credentials cache uses the right key on cedentials removal

[JorTurFer]

As @rickbrouwer found, there is a bug with the removal of the items from AWS cache.

This PR fixes the bug and includes a test to validate that it works

Checklist

• Commits are signed with Developer Certificate of Origin (DCO - learn more)

Relates to #7665 (comment)

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[github-actions]

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[JorTurFer]

/run-e2e aws
Update: You can check the progress here