tzdata is part of ubi8-minimal

[pierDipi]

We don't need to install it:

pierdipi@pierdipi openshift-knative-hack (main) $ docker run -ti --rm registry.access.redhat.com/ubi8/ubi-minimal /bin/bash
Unable to find image 'registry.access.redhat.com/ubi8/ubi-minimal:latest' locally
latest: Pulling from ubi8/ubi-minimal
Digest: sha256:a47c89f02b39a98290f88204ed3d162845db0a0c464b319c2596cfd1e94b444e
Status: Downloaded newer image for registry.access.redhat.com/ubi8/ubi-minimal:latest
[root@552ae7b1786c /]# rpm -qa tzdata
tzdata-2024a-1.el8.noarch

Also noticed the current command is no-op:

[2/2] STEP 2/7: RUN microdnf install tzdata

(microdnf:5003): librhsm-WARNING **: 06:22:34.990: Found 0 entitlement certificates

(microdnf:5003): librhsm-WARNING **: 06:22:34.994: Found 0 entitlement certificates
Downloading metadata...
Downloading metadata...
Downloading metadata...
Nothing to do.

This helps with Hermetic builds https://github.com/openshift-knative/eventing/pull/793/checks?check_run_id=29859057727

[openshift-ci[bot]]

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