message: Migrate from highfive to triagebot
diff: -[assign]
  -
  [ping.windows]
  message = """\
  Hey Windows Group! This bug has been identified as a good "Windows candidate".
  @@ -13,3 +11,11 @@ label = "O-windows"
  [shortcut]
  +[autolabel."S-waiting-on-review"]
  +new_pr = true
  +
  +[assign]
  +contributing_url = "https://rust-lang.github.io/cargo/contrib/"
  +
  +[assign.owners]
  +"*" = ["@ehuss", "@epage", "@weihanglo"]
  