message: Fix protoc setup
diff: Function Get-ProtobufTag() {
  if("$protobuf_tag" -eq "latest") {
  - $protobuf_tag = (Invoke-RestMethod https://api.github.com/repos/protocolbuffers/protobuf/tags).Name | Where-Object { $_ -match "v\d+.\d+.\d+$" } | Select-Object -First 1
  + $protobuf_tag = (Invoke-RestMethod https://api.github.com/repos/protocolbuffers/protobuf/releases).tag_name | Where-Object { $_ -match "v\d+.\d+.\d+$" } | Select-Object -First 1
  } else {
  try {
  [net.httpWebRequest] $request = [net.webRequest]::create("https://github.com/protocolbuffers/protobuf/releases/tag/v$protobuf_tag")
  @@ -9,7 +9,7 @@ Function Get-ProtobufTag() {
  $response.Close()
  $protobuf_tag = "v$protobuf_tag"
  } catch {
  - $protobuf_tag = (Invoke-RestMethod https://api.github.com/repos/protocolbuffers/protobuf/tags).Name | Where-Object { $_ -match "v\d+.\d+.\d+$" } | Select-Object -First 1
  + $protobuf_tag = (Invoke-RestMethod https://api.github.com/repos/protocolbuffers/protobuf/releases).tag_name | Where-Object { $_ -match "v\d+.\d+.\d+$" } | Select-Object -First 1
  }
  }
  return $protobuf_tag
  