Fix release workflow default branch detection (#1585)
Fix release workflow default branch detection (#1585)

Ensure that the github script to retrieve the default branch uses string
encoding instead of json. This will strip the unnecessary quotes
preventing matching.
vagrant-libvirt/vagrant-libvirt,electrofelix/vagrant-libvirt,electrofelix/vagrant-libvirt,electrofelix/vagrant-libvirt,vagrant-libvirt/vagrant-libvirt,vagrant-libvirt/vagrant-libvirt