NO-JIRA: Add Renovate rules for UBI8 images on release-1.x branches

[alebedev87]

MintMaker/Renovate reads config only from the default branch (main), which only had rules for ubi9 images. The release-1.1 and release-1.2 branches use ubi8/ubi-minimal and ubi8/go-toolset in their Containerfiles, so Renovate silently skipped them.

Add matchBaseBranches-scoped rules for both UBI8 images to enable base image digest updates and Go toolchain version bumps on release branches.

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request modifies renovate.json to add a new Renovate package rule targeting Red Hat UBI8 (Universal Base Image) Docker images. The rule enables automated updates for the ubi-minimal base image and the go-toolset package within Containerfile.external-dns-operator, limited to the release-1.1 and release-1.2 base branches. The go-toolset version is constrained to minor version 1.25 using the ^1\.25(\.|$) allowed-versions regex. The rule includes a Tuesday-after-5am update schedule and applies the redhat versioning scheme. All other existing Renovate configuration remains unchanged.

🚥 Pre-merge checks | ✅ 12

✅ Passed checks (12 passed)

Check name	Status	Explanation
Description check	✅ Passed	The description is clearly related to the changeset, explaining the rationale for adding UBI8 image rules and how Renovate configuration scoping works.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Stable And Deterministic Test Names	✅ Passed	All Ginkgo test titles in the PR are stable and deterministic with no dynamic content, pod names, timestamps, UUIDs, node names, or IP addresses.
Test Structure And Quality	✅ Passed	PR only modifies renovate.json (configuration change); no Ginkgo test code was added or modified, making the test quality check inapplicable.
Microshift Test Compatibility	✅ Passed	This PR contains only configuration changes to renovate.json; no new Ginkgo e2e tests are added, making the MicroShift compatibility check not applicable.
Single Node Openshift (Sno) Test Compatibility	✅ Passed	This PR modifies only renovate.json configuration for UBI8 images and adds no Ginkgo e2e tests. The custom check applies only to new tests, so it does not apply here.
Topology-Aware Scheduling Compatibility	✅ Passed	PR only modifies renovate.json (dependency management configuration), which does not introduce any deployment manifests, operator code, or scheduling constraints.
Ote Binary Stdout Contract	✅ Passed	PR only modifies renovate.json (Renovate dependency management configuration), which is a non-executable configuration file that cannot violate the OTE Binary Stdout Contract check.
Ipv6 And Disconnected Network Test Compatibility	✅ Passed	This PR modifies only renovate.json (Renovate config). No Ginkgo e2e tests are added, so the IPv6/disconnected network compatibility check does not apply.
Title check	✅ Passed	The title accurately describes the main change: adding Renovate rules for UBI8 images on release branches, which matches the core objective of enabling dependency updates on release-1.x branches.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[openshift-ci]

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[alebedev87]

/test e2e-azure-infoblox-operator

[openshift-ci-robot]

@alebedev87: This pull request explicitly references no jira issue.

Details

In response to this:

MintMaker/Renovate reads config only from the default branch (main), which only had rules for ubi9 images. The release-1.1 and release-1.2 branches use ubi8/ubi-minimal and ubi8/go-toolset in their Containerfiles, so Renovate silently skipped them.

Add matchBaseBranches-scoped rules for both UBI8 images to enable base image digest updates and Go toolchain version bumps on release branches.

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[openshift-ci]

@alebedev87: all tests passed!

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