Update crt fix chunked

[sbiscigl]

Description of changes:

• updates the CRT to version v0.31.1
• Fixes aws-chunked encoding in the CRT http cient, it did not work before.

A simple put object/get object with the CRT HTTP client and vanillia s3 client does not work before this patch as aws-chunked encoding was broken

i.e.

#include <aws/core/Aws.h>
#include <aws/s3/S3Client.h>
#include <aws/s3/model/GetObjectRequest.h>
#include <aws/s3/model/PutObjectRequest.h>

using namespace Aws;
using namespace Aws::Utils;
using namespace Aws::S3;
using namespace Aws::S3::Model;

namespace {
const char* LOG_TAG = "test-application";
}

auto main() -> int {
  SDKOptions options{};
  options.loggingOptions.logLevel = Logging::LogLevel::Debug;
  InitAPI(options);
  {
    S3Client client{};
    auto request = PutObjectRequest();
    request.SetBucket("sbiscigl");
    request.SetKey("test-crt-http-client");
    auto body = Aws::MakeShared<StringStream>(LOG_TAG, "some test string body");
    request.SetBody(body);
    const auto response = client.PutObject(request);
    assert(response.IsSuccess());
    auto get_object_request = GetObjectRequest();
    get_object_request.SetBucket(BUCKET_NAME);
    get_object_request.SetKey(KEY_NAME);
    const auto get_object_result = client.GetObject(get_object_request);
    assert(get_object_result.IsSuccess());
    std::cout << get_object_result.GetResult().GetBody().rdbuf() << std::endl;
  }
  ShutdownAPI(options);
  return 0;
}

This fixes the CRT HTTP client to use the same patch that we used for the original curl issuse(#3186).

Check all that applies:

• Did a review by yourself.
• Added proper tests to cover this PR. (If tests are not applicable, explain.)
• Checked if this PR is a breaking (APIs have been changed) change.
• Checked if this PR will not introduce cross-platform inconsistent behavior.
• Checked if this PR would require a ReadMe/Wiki update.

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[graebm]

https://github.com/awslabs/aws-crt-cpp/blob/743ab3891c4fb015a74713b7b631c720ce0ffe8e/include/aws/crt/io/Stream.h#L108-L113

                 * @return true if nothing went wrong.
                 * Return true even if you read 0 bytes because the end-of-file has been reached.
                 * Return true even if you read 0 bytes because data is not currently available.
                 *
                 * Return false if an actual failure condition occurs,

[sbiscigl]

updated