Bump CSV version from 4.21.0 to 4.23.0 on release-4.23

[pruan-rht]

Bump CSV version from 4.21.0 to 4.23.0 on the release-4.23 branch.

Replaces #668 (which incorrectly targeted main).

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-ci]

@pruan-rht: 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/make-e2e-test-ptl	09fa5cf	link	true	/test make-e2e-test-ptl
ci/prow/images	09fa5cf	link	true	/test images
ci/prow/make-e2e-test	09fa5cf	link	true	/test make-e2e-test

Full PR test history. Your PR dashboard.

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