USHIFT-2201: Update golang to 1.21.3

[pmtk]

No description provided.

[openshift-ci-robot]

@pmtk: This pull request references USHIFT-2201 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target the "4.16.0" version, but no target version was set.

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[ggiguash]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ggiguash, pmtk

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[openshift-ci-robot]

/retest-required

Remaining retests: 0 against base HEAD 37eb80b and 2 for PR HEAD c7b0e54 in total

[openshift-ci]

@pmtk: all tests passed!

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