message: Update to latest protobuf that fixes a warning.
  I've fixed and upstreamed this in
  ... now picking up that change.
  Without that, newer gcc's would complain about a
  maybe uninitialized value, failing the compile if that warning
  was enabled to -Werror.
diff: @@ -131,10 +131,10 @@ bison_register_toolchains()
  # A version newer than 21.21 as it fixes a warning on c++20
  http_archive(
  name = "com_google_protobuf",
  - sha256 = "3d6303e06c1155e6e7f8f19670fc0c96672b297396aac75b900ab324899a1624",
  - strip_prefix = "protobuf-8fb98cfb757ff8c7a6af9d874e12b0bb7f9dc0fb",
  + sha256 = "b0cdeb606b7abb3afc35c1a937c0994721c8b7b8102c5ae481570d8f9cf54a87",
  + strip_prefix = "protobuf-f58d0b56e37aa6a85848618018d7a17b86746bc0",
  urls = [
  - "https://github.com/protocolbuffers/protobuf/archive/8fb98cfb757ff8c7a6af9d874e12b0bb7f9dc0fb.zip",
  + "https://github.com/protocolbuffers/protobuf/archive/f58d0b56e37aa6a85848618018d7a17b86746bc0.zip",
  ],
  )
  