[BREAKING CHANGE] Update to grpc v1.9.0

[George-Payne]

• update to grpcJS v1.9.0
• prevent invalid dates on very long deadlines
• Update error handling to correctly handle CANCELLED

GRPCjs now throws a CANCELLED error when a stream is cancelled by the server, where previously it would throw a UNAVAILABLE status. We now handle this error internally in the same way as an UNAVAILABLE error, but throw a CancelledError. If users are catching UnavailableError on a stream for this situation, they should now be looking for a CancelledError.

Before:

try {
  for await (const event of client.readStream("my_stream")) {
    // do something
  }
} catch (error) {
  if (isCommandError(error)) {
    if (error.type === ErrorType.UNAVAILABLE) {
      // Server is unavailable to take request
      // _OR_
      // Stream was cancelled by server
    }
  }
}

After:

try {
  for await (const event of client.readStream("my_stream")) {
    // do something
  }
} catch (error) {
  if (isCommandError(error)) {
    if (error.type === ErrorType.CANCELLED) {
      // Stream was cancelled by server
    }

    if (error.type === ErrorType.UNAVAILABLE) {
      // Server is unavailable to take request
    }
  }
}