🧹 update golang to 1.21

[rhmdnd]

No description provided.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: rhmdnd

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[BhargaviGudi]

Verification passed with 4.15.0-rc.5 + code from PR #491

1. Install CO with PR 🧹 update golang to 1.21 #491
2. Create ssb

$ oc compliance bind -N test -S default-auto-apply profile/ocp4-cis profile/ocp4-cis-node
Creating ScanSettingBinding test
$ oc get suite -w
NAME   PHASE         RESULT
test   AGGREGATING   NOT-AVAILABLE
test   AGGREGATING   NOT-AVAILABLE
test   DONE          NON-COMPLIANT
test   DONE          NON-COMPLIANT
$ oc get pods
NAME                                             READY   STATUS    RESTARTS        AGE
compliance-operator-754cb8f9bf-stlh5             1/1     Running   1 (6m42s ago)   6m47s
ocp4-openshift-compliance-pp-64c669c697-msc8d    1/1     Running   0               6m39s
rhcos4-openshift-compliance-pp-97796b947-5cd8q   1/1     Running   0               6m39s

[BhargaviGudi]

/label qe-approved

[rhmdnd]

This is failing serial and parallel e2e testing due to images with the wrong glibc version:

compliance-operator: /lib64/libc.so.6: version `GLIBC_2.32' not found (required by compliance-operator)
compliance-operator: /lib64/libc.so.6: version `GLIBC_2.34' not found (required by compliance-operator)

[openshift-ci]

@rhmdnd: The following tests 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-aws-serial	63ff63f	link	true	/test e2e-aws-serial
ci/prow/e2e-aws-parallel	63ff63f	link	true	/test e2e-aws-parallel
ci/prow/e2e-rosa	63ff63f	link	true	/test e2e-rosa

Full PR test history. Your PR dashboard.

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[rhmdnd]

We've been bitten by this before - here is an example of what we did to fix:

#373