Import error

[proway2]

This error is generated ImportError: cannot import name 'PseudoElement' from 'cssselect.parser' at https://github.com/scrapy/parsel/blob/master/parsel/csstranslator.py#L8 when used with cssselect < 1.2.0.

cssselect is set to be any version from 0.9 https://github.com/scrapy/parsel/blob/master/setup.py#L28

How to reproduce:

1. Create an env and install cssselect == 1.1.0. Install the latest parsel

   pip list
   Package    Version
   ---------- -------
   cssselect  1.1.0
   jmespath   1.0.1
   lxml       4.9.2
   packaging  23.1
   parsel     1.8.1
   pip        22.0.2
   setuptools 59.6.0
   w3lib      2.1.1

2. Run:

   python
   Python 3.10.6 (main, Mar 10 2023, 10:55:28) [GCC 11.3.0] on linux
   Type "help", "copyright", "credits" or "license" for more information.
   >>> from cssselect.parser import Element, FunctionalPseudoElement, PseudoElement
   Traceback (most recent call last):
   File "<stdin>", line 1, in <module>
   ImportError: cannot import name 'PseudoElement' from 'cssselect.parser' (/home/someuser/.pyenv/versions/test/lib/python3.10/site-packages/cssselect/parser.py)
   >>>

[Gallaecio]

I guess we should increase the minimum required version of cssselect then.

[wRAR]

I think the new type is only used in typing but I don't see why we should work around this instead of just bumping the minimum version.