chore: use hummingbird for CI image

[feichashao]

Not for merge.

Mainly to see how CI works if I use Hummingbird as the base image.

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: feichashao

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 52.91%. Comparing base (bf30077) to head (38cfccc).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #879   +/-   ##
=======================================
  Coverage   52.91%   52.91%           
=======================================
  Files          86       86           
  Lines        6525     6525           
=======================================
  Hits         3453     3453           
  Misses       2610     2610           
  Partials      462      462           

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[openshift-ci]

@feichashao: 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/images	38cfccc	link	true	/test images

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[feichashao]

Confirmed that the ci/prow/images can pull the hummingbird image.

CI logs.

Pulling image quay.io/hummingbird/go:1.25.5-builder ...
Trying to pull quay.io/hummingbird/go:1.25.5-builder...
Getting image source signatures
Copying blob sha256:9350026d59792e0810a4a4c14754d2dc515c7df51e99ae5d7b2cb82021b6a245
Copying config sha256:672fca57710c10a0aef1e119466a39d01eb6b0b226d06b2a4b95c751948f126e
Writing manifest to image destination

Pulling image quay.io/something/not-exist:fake ...
Trying to pull quay.io/something/not-exist:fake...
Warning: Pull failed, retrying in 5s ...
Trying to pull quay.io/something/not-exist:fake...
Warning: Pull failed, retrying in 5s ...
Trying to pull quay.io/something/not-exist:fake...
Warning: Pull failed, retrying in 5s ...
�[36mINFO�[0m[2026-01-13T07:29:55Z] Build unused-amd64 previously failed from an infrastructure error (PullBuilderImageFailed), retrying... 
�[33mWARN�[0m[2026-01-13T07:29:55Z] failed to get build "unused-amd64"; aborting event recording  �[33merror�[0m=builds.build.openshift.io "unused-amd64" not found