File _constraints of Package librewolf

<constraints>
  <hardware>
    <disk>
      <size unit="G">36</size>
    </disk>
    <physicalmemory>
      <size unit="G">16</size>
    </physicalmemory>
    <memory>
      <size unit="G">32</size>
    </memory>
  </hardware>
  <hostlabel exclude="true">SLOW_CPU</hostlabel>
</constraints>