message: Update rules_go to 0.18.5
  This version contains forward fixes for Bazel 0.27.
diff: @@ -215,8 +215,8 @@ REPOSITORY_LOCATIONS = dict(
  urls = ["https://github.com/grpc-ecosystem/grpc-httpjson-transcoding/archive/64d6ac985360b624d8e95105701b64a3814794cd.tar.gz"],
  ),
  io_bazel_rules_go = dict(
  - sha256 = "3743a20704efc319070957c45e24ae4626a05ba4b1d6a8961e87520296f1b676",
  - urls = ["https://github.com/bazelbuild/rules_go/releases/download/0.18.4/rules_go-0.18.4.tar.gz"],
  + sha256 = "a82a352bffae6bee4e95f68a8d80a70e87f42c4741e6a448bec11998fcc82329",
  + urls = ["https://github.com/bazelbuild/rules_go/releases/download/0.18.5/rules_go-0.18.5.tar.gz"],
  ),
  rules_foreign_cc = dict(
  sha256 = "136470a38dcd00c7890230402b43004dc947bf1e3dd0289dd1bd2bfb1e0a3484",
  