File _link of Package plank

<link project="openSUSE:Backports:SLE-15-SP6:Update" rev="3044466a2e5c7d968b239daa9038a5c1" baserev="3044466a2e5c7d968b239daa9038a5c1">
  <patches>
    <branch/>
  </patches>
</link>