woob: fix build by adding rich to pythonRelaxDeps

As of 6c22a1c2f1, `rich` was updated to
14.0.0. This broke the woob build, which requires 13.x.
The changes in `rich` 14.0.0 are minimal
(https://github.com/Textualize/rich/releases/tag/v14.0.0),
so this is unlikely to cause issues for woob.

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

@@ -49,7 +49,10 @@ buildPythonPackage rec {
     setuptools
   ];
 
-  pythonRelaxDeps = [ "packaging" ];
+  pythonRelaxDeps = [
+    "packaging"
+    "rich"
+  ];
 
   propagatedBuildInputs = [
     babel