Bump CSV version from 4.21.0 to 5.0.0 on release-5.0

[pruan-rht]

Bump CSV version from 4.21.0 to 5.0.0 on the release-5.0 branch.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: pruan-rht
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[openshift-ci]

@pruan-rht: 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/make-e2e-test	07691c6	link	true	/test make-e2e-test

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