Update poetry2nix override for pillow == 9.5.0

There is a bug in the `pillow` 9.5.0 release that breaks the build:

  nix-community/poetry2nix#1139
  python-pillow/Pillow#7069

Apply the patch with the upstream fix when building version 9.5.0.

The old override is still kept, even though the main part of that
override was included in nix-community/poetry2nix#689 (the problem is
that `buildInputs` in the poetry2nix override does not include all
packages that are in the nixpkgs package for `pillow`, and therefore
`preConfigure` might add references to nonexistent packages).

shell.nix

@@ -56,6 +56,14 @@ let
         propagatedBuildInputs = (old.buildInputs or []) ++ pkgs.python3.pkgs.pillow.propagatedBuildInputs;
         buildInputs = (old.buildInputs or []) ++ pkgs.python3.pkgs.pillow.buildInputs;
         preConfigure = (old.preConfigure or "") + pkgs.python3.pkgs.pillow.preConfigure;
+
+        # https://github.com/nix-community/poetry2nix/issues/1139
+        patches = (old.patches or []) ++ lib.optionals (old.version == "9.5.0") [
+          (pkgs.fetchpatch  {
+            url = "https://github.com/python-pillow/Pillow/commit/0ec0a89ead648793812e11739e2a5d70738c6be5.diff";
+            sha256 = "sha256-rZfk+OXZU6xBpoumIW30E80gRsox/Goa3hMDxBUkTY0=";
+          })
+        ];
       });
       qmk = super.qmk.overridePythonAttrs(old: {
         # Allow QMK CLI to run "qmk" as a subprocess (the wrapper changes