openshift-4.22: driver-toolkit: increase SBOM step memory to 16Gi

[redhat-chai-bot]

Add sbom_step_resources with 16Gi memory to driver-toolkit image config.

This pairs with art-tools#3302 which adds sbom_step_resources support.

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AI-generated. Review for accuracy.

@joepvd requested in Slack thread

[joepvd]

/lgtm
/approve

[openshift-ci]

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This pull-request has been approved by: joepvd

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[openshift-ci]

@redhat-chai-bot: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/art-pre-commit-check	c7eed39	link	false	/test art-pre-commit-check

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