[CI] Fix missing bat in clang-format job and use CERN pull-through cache for Kaniko
Description
This MR updates the CTA CI pipeline image tags to the latest version: 2025-07-03-12359397.el9.
This fixes the missing bat
package in the lint image. It also ensure we make use of the CERN pull-through cache for Kaniko which we weren't doing yet for some reason...
Checklist
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Documentation reflects the changes made. -
Merge Request title is clear, concise, and suitable as a changelog entry. See this link
Edited by Niels Alexander Buegel