fix(deps): update module github.com/openshift/imagebuilder to v1.2.16

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
github.com/openshift/imagebuilder	v1.2.16-0.20250828154754-e22ebd3ff511 -> v1.2.16

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Warning

Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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Release Notes

openshift/imagebuilder (github.com/openshift/imagebuilder)

v1.2.16

Compare Source

What's Changed

• Add a ParseIgnoreReader() by @​nalind in #​299
• Set empty TARGETVARIANT and BUILDVARIANT by @​Honny1 in #​301
• Bump dependencies by @​nalind in #​302
• Add arm64 in Travis by @​nalind in #​303
• Inherit ARGs across stages that are based other stages by @​nalind in #​304

New Contributors

• @​Honny1 made their first contribution in #​301

Full Changelog: openshift/imagebuilder@v1.2.15...v1.2.16

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