message: Update platforms dependency.
diff: @@ -6,9 +6,11 @@ load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
  # Bazel platform rules, needed as dependency to absl.
  http_archive(
  name = "platforms",
  - sha256 = "a879ea428c6d56ab0ec18224f976515948822451473a80d06c2e50af0bbe5121",
  - strip_prefix = "platforms-da5541f26b7de1dc8e04c075c99df5351742a4a2",
  - urls = ["https://github.com/bazelbuild/platforms/archive/da5541f26b7de1dc8e04c075c99df5351742a4a2.zip"], # 2022-05-27
  + urls = [
  + "https://mirror.bazel.build/github.com/bazelbuild/platforms/releases/download/0.0.6/platforms-0.0.6.tar.gz",
  + "https://github.com/bazelbuild/platforms/releases/download/0.0.6/platforms-0.0.6.tar.gz",
  + ],
  + sha256 = "5308fc1d8865406a49427ba24a9ab53087f17f5266a7aabbfc28823f3916e1ca",
  )
  http_archive(
  