Fix scan failure when poetry project depends on setuptools or pip
What does this MR do and why?
When a poetry.lock file is parsed, we loop through all declared dependencies and look for the [[package]] section that matches the referenced package.
Though, it appears that in some cases there is no such [[package]] entry for a declared dependency. This happens for instance for some built-in packages like setuptools and pip. See details in this discussion: gitlab-org/gitlab#570326 (comment 2752754181)
To address this and prevent the scan to fail, we now skip the error and continue when encountering this situation for setuptools and pip packages.
Related issues
DS analyzer fails for poetry.lock when referenc... (gitlab-org/gitlab#570326 - closed)
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