MGMT-22731: Add To Renovate Tool - Update UBI-minimal Version Automatically

[shay23bra]

Update renovate tool to be able to update UBI images

[openshift-ci-robot]

@shay23bra: This pull request references MGMT-22731 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the task to target the "4.22.0" version, but no target version was set.

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In response to this:

Update renovate tool to be able to update UBI images

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[coderabbitai]

Walkthrough

Renovate configuration is expanded with a schema reference, multiple managers (custom.regex and tekton), customManager with Dockerfile regex matching, and three packageRules for update grouping and control. Changes shift from basic configuration to structured, multi-manager setup.

Changes

Cohort / File(s)

Summary

Renovate configuration schema and manager setup renovate.json

Adds $schema reference; expands labels from flat array to multi-line nested structure. Enables custom.regex and tekton managers. Introduces customManager with regex-based Dockerfile matcher to extract currentValue and currentDigest, binding to docker datasource. Establishes three packageRules: Konflux build pipeline grouping on Saturday, UBI runtime image labeling for registry.access.redhat.com/ubi9/ubi-minimal, and disabled major update rule for ubi-minimal from docker datasource.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: shay23bra
Once this PR has been reviewed and has the lgtm label, please assign jc-rh for approval. For more information see the Code Review Process.

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[coderabbitai]

Actionable comments posted: 2

🤖 Fix all issues with AI agents

In `@renovate.json`:
- Around line 4-7: The Renovate config currently auto-applies the labels "lgtm"
and "approved" via the labels array, which bypasses human review; update the
"labels" setting to remove those auto-approval labels (delete "lgtm" and
"approved") or replace them with non-approval labels and/or add stricter
controls (disable automerge/auto-approve for dependency updates, or scope
auto-approval to a vetted group via a rule) so Renovate PRs no longer get
automatic code-review approval; look for the "labels" array in the renovate.json
and change it accordingly.
- Around line 14-18: The regex in the "tekton" -> managerFilePatterns entry is
malformed (unescaped dot and wrong wildcard) so it doesn't correctly match files
under a .tekton directory; update the pattern string in the managerFilePatterns
array for the "tekton" object to a proper regex that escapes the dot and matches
any files under the .tekton directory (i.e., use an anchored pattern that
escapes "." and includes a ".*" for trailing path), ensuring you edit the
managerFilePatterns value where "tekton" is defined.

[openshift-ci]

@shay23bra: The following tests 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/ibio-reinstall	4be9345	link	false	/test ibio-reinstall
ci/prow/e2e-ibio	4be9345	link	true	/test e2e-ibio

Full PR test history. Your PR dashboard.

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