feat(Dockerfile): modify base to use ubi-micro to reduce attack vectors

[jcantrill]

Description

• Migrates the base image to ubi9-micro to reduce CVE exposure
• Updates the base golang builder image to 1.26

Links

backport of #3439

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

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[jcantrill]

/hold

at @xperimental request

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[openshift-ci]

@jcantrill: 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/e2e-target	cbf7625	link	true	/test e2e-target

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[vparfonov]

/test e2e-target

[openshift-ci]

PR needs rebase.

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