pyhanko-cli: move pyyaml dependency from pyhanko to pyhanko-cli

python3Packasge.pyhanko doesn't (any longer) need pyyaml, pyhanko-cli
still depends on it. stdenv was not used in pyhanko at all.

pkgs/by-name/py/pyhanko-cli/package.nix

@@ -38,6 +38,7 @@ python3Packages.buildPythonApplication (finalAttrs: {
       tzlocal
       pyhanko
       pyhanko-certvalidator
+      pyyaml
       click
       platformdirs
     ]

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

@@ -1,6 +1,5 @@
 {
   lib,
-  stdenv,
   buildPythonPackage,
   fetchFromGitHub,
   pyprojectVersionPatchHook,
@@ -14,7 +13,6 @@
   cryptography,
   lxml,
   pyhanko-certvalidator,
-  pyyaml,
   requests,
   tzlocal,
 
@@ -69,7 +67,6 @@ buildPythonPackage (finalAttrs: {
     cryptography
     lxml
     pyhanko-certvalidator
-    pyyaml
     requests
     tzlocal
   ];