image-builder-presubmits: update resources

[ramrodo]

Done as part of the Contributor Summit workshop and efforts to reduce requests for jobs that are not using requested resources.

Relevant dashboards:

• https://monitoring-eks.prow.k8s.io/d/53g2x7OZz/jobs?orgId=1&var-org=kubernetes-sigs&var-repo=image-builder&var-job=pull-container-image-build&viewPanel=180&from=1710783628992&to=1710788707065
• https://monitoring-eks.prow.k8s.io/d/53g2x7OZz/jobs?orgId=1&var-org=kubernetes-sigs&var-repo=image-builder&var-job=pull-container-image-build&viewPanel=128&from=1710356324932&to=1710447673164

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: ramrodo
Once this PR has been reviewed and has the lgtm label, please assign kkeshavamurthy for approval. For more information see the Kubernetes Code Review Process.

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• config/jobs/kubernetes-sigs/image-builder/OWNERS

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[rjsadow]

/lgtm