maintain-kubeusers: bump to 0.0.139-20240604121608-84e492a3
From 0.0.138-20240604120147-29f8d0f2 To 0.0.139-20240604121608-84e492a3 See https://gitlab.wikimedia.org/repos/cloud/toolforge/maintain-kubeusers/-/releases
Signed-off-by: Arturo Borrero Gonzalez aborrero@wikimedia.org