Prepare the release of Knative Operator 1.12

[knative-prow[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: houshengbo

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/knative/operator/blob/main/OWNERS)~~ [houshengbo] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (820e104) 79.40% compared to head (13a24a9) 79.40%.

:exclamation: Current head 13a24a9 differs from pull request most recent head 30ea2cd. Consider uploading reports for the commit 30ea2cd to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1612 +/- ## ======================================= Coverage 79.40% 79.40% ======================================= Files 41 41 Lines 1845 1845 ======================================= Hits 1465 1465 Misses 277 277 Partials 103 103 ``` | [Files](https://app.codecov.io/gh/knative/operator/pull/1612?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=knative) | Coverage Δ | | |---|---|---| | [...econciler/knativeserving/security/securityguard.go](https://app.codecov.io/gh/knative/operator/pull/1612?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=knative#diff-cGtnL3JlY29uY2lsZXIva25hdGl2ZXNlcnZpbmcvc2VjdXJpdHkvc2VjdXJpdHlndWFyZC5nbw==) | `73.07% <ø> (ø)` | |

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[knative-prow[bot]]

@houshengbo: 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
eventing-upgrade-tests_operator_main	ebdaec5c2d2af66b50b5800553ec300f1214fd53	link	true	/test eventing-upgrade-tests
serving-upgrade-tests_operator_main	ebdaec5c2d2af66b50b5800553ec300f1214fd53	link	true	/test serving-upgrade-tests
build-tests_operator_main	ebdaec5c2d2af66b50b5800553ec300f1214fd53	link	true	/test build-tests
integration-tests_operator_main	ebdaec5c2d2af66b50b5800553ec300f1214fd53	link	true	/test integration-tests
unit-tests_operator_main	ebdaec5c2d2af66b50b5800553ec300f1214fd53	link	true	/test unit-tests

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