Update make target for staging release

[g-gaston]

Description of changes:

The images are built and pushed by a prow job, we don't need to do it manually.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: g-gaston

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[rohityadavcloud]

/assign @weizhouapache

/ok-to-test /lgtm

[codecov-commenter]

Codecov Report

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

Comparison is base (7ce8a27) 25.45% compared to head (4e53ae7) 25.45%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #335 +/- ## ======================================= Coverage 25.45% 25.45% ======================================= Files 59 59 Lines 5555 5555 ======================================= Hits 1414 1414 Misses 4002 4002 Partials 139 139 ```

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