OCPBUGS-97322: bump go-billy to v5.9.0 to fix CVE-2026-44740

[jechen0648]

Summary

• Bumps github.com/go-git/go-billy/v5 to v5.9.0 to address CVE-2026-44740
• Updates go.mod, go.sum, and vendor/ accordingly

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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: jechen0648
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[openshift-ci-robot]

@jechen0648: This pull request references Jira Issue OCPBUGS-97322, which is invalid:

• release note text must be set and not match the template OR release note type must be set to "Release Note Not Required". For more information you can reference the OpenShift Bug Process.
• expected Jira Issue OCPBUGS-97322 to depend on a bug targeting a version in 4.19.0, 4.19.z and in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but no dependents were found

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

Details

In response to this:

Summary

• Bumps github.com/go-git/go-billy/v5 to v5.9.0 to address CVE-2026-44740
• Adds blank import in pkg/tools/tools.go so the dependency is tracked in vendor
• Updates go.mod, go.sum, and vendor/ accordingly

CVE Details

CVE-2026-44740 — Billy: Denial of Service via crafted input due to insufficient validation

Prior to v5.9.0, multiple components in go-billy may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption. Fixed in v5.9.0.

Fixes: OCPBUGS-97322

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[bpickard22]

we arent trying to bump the go version here, just the one dep

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@jechen0648: all tests passed!

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