cleanup: use more conservative baseline settings

[incertum]

• Didn't expect bare machines with only 16 CPUs.
• Adopt conservative baseline configs as new default baseline.
• Fixed enabling libbpf stats

@leogr

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: incertum, leogr

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/falcosecurity/cncf-green-review-testing/blob/main/OWNERS)~~ [incertum,leogr] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[poiana]

LGTM label has been added.

Git tree hash: 6d9ee188533842a918b819ec7d9296e516b49c72