Issues with payload in POST requests

Description

When using the crawlee.http_crawler._http_crawler module, I'm encountering a HttpStatusCodeError with a 404 status code. This error occurs during the _make_http_request operation and causes the crawler to reach the maximum number of retries.

The issue with the 404 error in the crawler seems to be related to the way i'm handling the request payload.

Steps to Reproduce

Initialize a new Crawlee project and set up an HttpCrawler with either the CurlImpersonateHttpClient or the HttpxHttpClient:

import asyncio
import json
from crawlee import Request
from crawlee.http_crawler import HttpCrawler, HttpCrawlingContext
from crawlee.http_clients.curl_impersonate import CurlImpersonateHttpClient
from crawlee.http_clients import HttpxHttpClient

async def main() -> None:
    #http_client = CurlImpersonateHttpClient(
    #    persist_cookies_per_session=True,
    #)
    # Or use HttpxHttpClient:
    http_client = HttpxHttpClient(
        persist_cookies_per_session=True,
    )

    crawler = HttpCrawler(
        http_client=http_client,
        max_requests_per_crawl=20,
    )

    url = "https://www.viagogo.es/Entradas-Deportes/Futbol/Real-Madrid-C-F-Entradas/E-153769088"
    payload = {
        'ShowAllTickets': True,
        'HideDuplicateTicketsV2': False,
        'Quantity': 2,
        'IsInitialQuantityChange': False,
        'PageSize': 20,
        'CurrentPage': 2,
        'SortBy': 'NEWPRICE',
        'SortDirection': 0,
        'Sections': '',
        'Rows': '',
        'Seats': '',
        'SeatTypes': '',
        'TicketClasses': '',
        'ListingNotes': '',
        'PriceRange': '0,100',
        'InstantDelivery': False,
        'EstimatedFees': True,
        'BetterValueTickets': True,
        'PriceOption': '',
        'HasFlexiblePricing': False,
        'ExcludeSoldListings': False,
        'RemoveObstructedView': False,
        'NewListingsOnly': False,
        'PriceDropListingsOnly': False,
        'SelectBestListing': False,
        'ConciergeTickets': False,
        'Method': 'IndexSh'
    }
    payload_bytes = json.dumps(payload).encode()

    print(f"0. Start: {payload_bytes}")

    initial_req = Request.from_url(
        url=url,
        method="POST",
        payload=payload_bytes,
        use_extended_unique_key=True,
    )

    @crawler.router.default_handler
    async def request_handler(context: HttpCrawlingContext) -> None:
        # Handle the response here
        pass

    # Run the crawler
    await crawler.run([initial_req])

if __name__ == '__main__':
    asyncio.run(main())

The crawler encounters a 404 error during the crawl operation and raises the following traceback:

[crawlee.http_crawler._http_crawler] ERROR Request failed and reached maximum retries
      Traceback (most recent call last):
        File "/Development/scraper/.venv/lib/python3.12/site-packages/crawlee/basic_crawler/_context_pipeline.py", line 62, in __call__
          result = await middleware_instance.__anext__()
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/Development/scraper/.venv/lib/python3.12/site-packages/crawlee/http_crawler/_http_crawler.py", line 101, in _make_http_request
          result = await self._http_client.crawl(
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/Development/scraper/.venv/lib/python3.12/site-packages/crawlee/http_clients/curl_impersonate.py", line 152, in crawl
          self._raise_for_error_status_code(
        File "/Development/scraper/.venv/lib/python3.12/site-packages/crawlee/http_clients/_base.py", line 153, in _raise_for_error_status_code
          raise HttpStatusCodeError('Error status code returned', status_code)
    crawlee.errors.HttpStatusCodeError: Error status code returned (status code: 404).

But if I pass the request as this:

    initial_req = Request.from_url(
        url=url,
        method="POST",
        payload=payload,  # payload as dictionary
        use_extended_unique_key=True,
    )

The error is the following:

Traceback (most recent call last):
  File "/Development/scraper/src/test_clients.py", line 175, in <module>
    asyncio.run(main())
  File "/Library/Application Support/uv/python/cpython-3.12.7-macos-x86_64-none/lib/python3.12/asyncio/runners.py", line 194, in run
    return runner.run(main)
           ^^^^^^^^^^^^^^^^
  File "/Library/Application Support/uv/python/cpython-3.12.7-macos-x86_64-none/lib/python3.12/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Library/Application Support/uv/python/cpython-3.12.7-macos-x86_64-none/lib/python3.12/asyncio/base_events.py", line 687, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/Development/scraper/src/test_clients.py", line 159, in main
    initial_req = Request.from_url(
                  ^^^^^^^^^^^^^^^^^
  File "/Development/scraper/.venv/lib/python3.12/site-packages/crawlee/_request.py", line 321, in from_url
    unique_key = unique_key or compute_unique_key(
                               ^^^^^^^^^^^^^^^^^^^
  File "/Development/scraper/.venv/lib/python3.12/site-packages/crawlee/_utils/requests.py", line 126, in compute_unique_key
    payload_hash = _get_payload_hash(payload)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Development/scraper/.venv/lib/python3.12/site-packages/crawlee/_utils/requests.py", line 151, in _get_payload_hash
    return compute_short_hash(payload_in_bytes)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Development/scraper/.venv/lib/python3.12/site-packages/crawlee/_utils/crypto.py", line 17, in compute_short_hash
    hash_object = sha256(data)
                  ^^^^^^^^^^^^
TypeError: object supporting the buffer API required

Environment

Python version: 3.12
Crawlee version: 0.4.0