python3Packages.yamlfix: fix build

Pin maison to v1.4.3. since v2.0.0 contains a breaking change.
Closes #381020

pkgs/development/python-modules/yamlfix/default.nix

···
   ruyaml,
   setuptools,
 }:
+let
+  maison143 = maison.overridePythonAttrs (old: rec {
+    version = "1.4.3";
+    src = fetchFromGitHub {
+      owner = "dbatten5";
+      repo = "maison";
+      tag = "v${version}";
+      hash = "sha256-2hUmk91wr5o2cV3un2nMoXDG+3GT7SaIOKY+QaZY3nw=";
+    };
+  });
+in
 
 buildPythonPackage rec {
   pname = "yamlfix";
···
 
   dependencies = [
     click
-    maison
+    maison143
     ruyaml
   ];