fix: update test with latest libs fix

[Andreagit97]

Test TestFalco_Legacy_NonSudoSetuid was affected by the bug reported here falcosecurity/libs#1923. A thread with vtid=-1 was considered as a container thread and for this reason, we didn't match the rule because of this condition container and not user.name in ("<NA>","N/A",""). The user is NA and before the fix, we were considered in a container.

Now with the fix, we are no longer in a container so the rule correctly triggers. Full rule output with addition of thread.vtid and thread.tid

22:23:30.177328055: Notice Unexpected setuid call by non-sudo, non-root program (user=<NA> tid=10397, vtid=<NA> user_loginuid=-1 cur_uid=4294967295 parent=<NA> command=<NA> pid=-1 uid=root container_id= image=<NA>)

[poiana]

LGTM label has been added.

Git tree hash: c567ea581a061e5a3cbbe1bd15be3b5a88b5e209

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Andreagit97, LucaGuerra

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