fix(deps): update github.com/openshift/imagebuilder digest to e87e4e1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/openshift/imagebuilder	require	digest	7ebfb09 -> e87e4e1

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[renovate]

ℹ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 1 additional dependency was updated

Details:

Package	Change
github.com/docker/docker	v27.5.1+incompatible -> v28.0.0+incompatible

[openshift-ci]

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[packit-as-a-service]

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