Revert "Ignore cffi installation error"

[mkniewallner]

This reverts commit f61caa2.

cffi now supports, and provides wheels for, Python 3.13 (https://github.com/python-cffi/cffi/releases/tag/v1.17.0), so this should work as expected on 3.13.

Tested on https://github.com/mkniewallner/mkv-playground/pull/9/files where cffi was correctly installed:

Install maturin
[...]
  Collecting cffi
    Downloading cffi-1.17.1-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (1.5 kB)
  Collecting pycparser (from cffi)
    Downloading pycparser-2.22-py3-none-any.whl.metadata (943 bytes)
  Downloading cffi-1.17.1-cp313-cp313-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (479 kB)
  Downloading pycparser-2.22-py3-none-any.whl (117 kB)
  Installing collected packages: pycparser, cffi
  Successfully installed cffi-1.17.1 pycparser-2.22