chore: update third-party image digests (release-v0.79.x)

[tekton-robot]

Summary

Automated update of third-party base image digests to their latest versions
from registry.redhat.io on branch release-v0.79.x.

This helps ensure images are current and include the latest CVE fixes.

Files updated

• operatorhub/openshift/config.yaml
• config/openshift/base/operator.yaml
• operatorhub/openshift/release-artifacts/bundle/manifests/*.yaml
• cmd/openshift/operator/kodata/tekton-addon/addons/**/*.yaml

Changed digests

-- image: registry.redhat.io/rhel9/skopeo@sha256:51bbf898541d2f41775074028c365edaeb840fb14e88f4dcef96174d5d0864c5
+- image: registry.redhat.io/rhel9/skopeo@sha256:fc58b8a734a34f1fd1b0b31e7e137a8200c72e233fbe2a67a29b7a665b683ce9
-- image: registry.redhat.io/rhel9/buildah@sha256:2347646db766dad7d85dfa9226e185e1d4de5defe26e28f4e7ca0d09b19e1bef
+- image: registry.redhat.io/rhel9/buildah@sha256:c54ea681142034817a77275ec770167cb17e64020f8c2dbb57c054c39b6c514a
-- image: registry.redhat.io/rhel9/postgresql-15@sha256:0b2579cba0fd9f1754c2c9515d5f873f45de009cf044ce950284dbd1a4e6f10c
+- image: registry.redhat.io/rhel9/postgresql-15@sha256:5675bd5859ffc1e16eb4aa5e43f519964a0bba688db7922b3540022259db34dc

This PR was auto-generated by the update-third-party-image-digests workflow.

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: divyansh42 / name: Divyanshu Agrawal (ae48090)

[tekton-robot]

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