pr-crio-cgrpv2-imagefsfs-e2e-kubetest2: use n1-standard-4 machine

[bart0sh]

Decreasing parallelism for this job in the #33929 helped, but not fully fixed the issue. It also increased job run time significantly. Let's try to use bigger instance.

Note: this is a test PR, it doesn't guarantee the expected effect as I can't reproduce the issue in my setup.

Ref: ##32567 (comment) kubernetes/kubernetes#127831

/sig node
/cc @elieser1101 @kannon92 @haircommander

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In response to this:

Decreasing parallelism for this job in the #33929 helped, but not fully fixed the issue. It also increased job run time significantly. Let's try to use bigger instance.

Note: this is a test PR, it doesn't guarantee the expected effect as I can't reproduce the issue in my setup.

Ref: ##32567 (comment) kubernetes/kubernetes#127831

/sig node
/cc @elieser1101 @kannon92 @haircommander

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[kannon92]

This is only impacting the imagefs job so I think this is fine.

/lgtm
/approve

[k8s-ci-robot]

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This pull-request has been approved by: bart0sh, kannon92

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