Revert "python3Packages.thinc: 8.3.6 -> 9.1.1"

This reverts commit 89af1fa9f97aff0171cbc60ba2af2eeb68615971.

https://hydra.nixos.org/build/305213285/nixlog/2/tail
I tried applying a patch, but that wouldn't fix the build:
https://github.com/explosion/thinc/commit/47d8e1067de1fc994711a55d4d

Also note that upstream considers 8.3.6 to be the latest version now:
https://github.com/explosion/thinc/releases/latest

Changed files
+2 -2
pkgs
development
python-modules
thinc
+2 -2
pkgs/development/python-modules/thinc/default.nix
···
buildPythonPackage rec {
pname = "thinc";
-
version = "9.1.1";
pyproject = true;
src = fetchPypi {
inherit pname version;
-
hash = "sha256-IfrimG13d6bwULkEbcnqsRhS8cmpl9zJAy8+zCJ4Sko=";
};
build-system = [
···
buildPythonPackage rec {
pname = "thinc";
+
version = "8.3.6";
pyproject = true;
src = fetchPypi {
inherit pname version;
+
hash = "sha256-SZg/m33cQ0OpUyaUqRGN0hbXpgBSCiGEmkO2wmjsbK0=";
};
build-system = [