message: Update build_bazel_rules_swift version to match Bazel 4.2.2
diff: @@ -84,11 +84,9 @@ http_archive(
  # https://github.com/bazelbuild/rules_swift/releases
  http_archive(
  name = "build_bazel_rules_swift",
  - sha256 = "d0833bc6dad817a367936a5f902a0c11318160b5e80a20ece35fb85a5675c886",
  - strip_prefix = "rules_swift-3eeeb53cebda55b349d64c9fc144e18c5f7c0eb8",
  + sha256 = "8407fa0fd04a7ce1d6bb95e90b216404466f809eda459c23cb57b5fa1ef9d639",
  urls = [
  - "https://storage.googleapis.com/mirror.tensorflow.org/github.com/bazelbuild/rules_swift/archive/3eeeb53cebda55b349d64c9fc144e18c5f7c0eb8.tar.gz",
  - "https://github.com/bazelbuild/rules_swift/archive/3eeeb53cebda55b349d64c9fc144e18c5f7c0eb8.tar.gz",
  + "https://github.com/bazelbuild/rules_swift/releases/download/0.21.0/rules_swift.0.21.0.tar.gz",
  ],
  )
  