lambda_function_restrict_public_access.sql query not evaluating correctly

[rajlearner17]

Describe the bug
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policy_std column is jsonb, hence the below statement will generate null which will move the checks to OK

 when policy_std -> 'Statement' ->> 'Effect' = 'Allow'
    and (
      policy_std -> 'Statement' ->> 'Principal' = '*'
      or ( policy_std -> 'Principal' -> 'AWS' ) :: text = '*'
    ) then 'alarm'

Steampipe version (steampipe -v)
Example: v0.3.0

Plugin version (steampipe plugin list)
Example: v0.5.0

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