update loxigen-artifacts
update loxigen-artifacts

* submodules/loxigen-artifacts cb7d6d4...c236521 (1):
  > Artifacts from https://github.com/floodlight/loxigen/compare/564f5491d87b087da53e8c6941eac6a0b9b7f72a...04541691ec565a1753bf1021fe9b165ba9da2e3d

floodlight/ivs,vezril/ivs,floodlight/ivs,vezril/ivs,vezril/ivs,floodlight/ivs