Noobaa mistakenly accepts NotPrincipal with Effect: Allow

[alphaprinz]

Environment info

• NooBaa Version: 5.16
• Platform: Any

Actual behavior

1. Noobaa accepts statements that has NotPrincipal and Effect: Allow, contradicting AWS doc

Statement: [
{
Effect: 'Allow',
NotPrincipal: { AWS: user_a },
Action: ['s3:PutObject'],
Resource: [arn:aws:s3:::${BKT}/*]
}
]

https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_elements_notprincipal.html: "NotPrincipal must be used with "Effect":"Deny". Using it with "Effect":"Allow" is not supported."

Expected behavior

1. Same as AWS.

Steps to reproduce

1. Put bucket policy with above statement.

[github-actions]

This issue had no activity for too long - it will now be labeled stale. Update it to prevent it from getting closed.

[github-actions]

This issue is stale and had no activity for too long - it will now be closed.