mockgen deprecated: use uber-go/mock instead

[sebrandon1]

https://github.com/golang/mock is marked as archived as of June 27, 2023. They recommend using go.uber.org/mock.

This PR attempts to change the dependency to one that is maintained.

Tracking issue: redhat-best-practices-for-k8s/telco-bot#45

[openshift-ci]

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[rhamilto]

/assign @jhadvig
/assign @TheRealJon

[openshift-ci]

@sebrandon1: 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/okd-scos-e2e-aws-ovn	c439aa7	link	false	/test okd-scos-e2e-aws-ovn
ci/prow/e2e-gcp-console	c439aa7	link	true	/test e2e-gcp-console
ci/prow/backend	c439aa7	link	true	/test backend

Full PR test history. Your PR dashboard.

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