File _link of Package mailman.openSUSE_Leap_15.2_Update

<link project="openSUSE:Leap:15.2:Update" package="mailman" rev="ce5504f54705f18920555571e8990b02" vrev="7.4" baserev="ce5504f54705f18920555571e8990b02">
  <patches>
    <branch></branch>
  </patches>
</link>