Revert "python3Packages.numpy: 1.21.5 -> 1.22.2"

This reverts commit 940af4b22772a13b2fe57e3f082e8d04634b5074.

Causes problems with scikit-learn, details can be found over in
https://github.com/NixOS/nixpkgs/pull/156578.

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

@@ -44,7 +44,7 @@ in buildPythonPackage rec {
   # Attention! v1.22.0 breaks scipy and by extension scikit-learn, so
   # build both to verify they don't break.
   # https://github.com/scipy/scipy/issues/15414
-  version = "1.22.2";
+  version = "1.21.5";
 
   format = "pyproject.toml";
   disabled = pythonOlder "3.7";
@@ -52,7 +52,7 @@ in buildPythonPackage rec {
   src = fetchPypi {
     inherit pname version;
     extension = "zip";
-    sha256 = "sha256-B2ruWjdj1B2mvvlWX988uYdgb1Z82LEEre0rOLe0er8=";
+    sha256 = "sha256-alkovGJBJk3OXtUJ5m8zZ2/Jf0ZOepGe3GcvtVMiIe4=";
   };
 
   patches = lib.optionals python.hasDistutilsCxxPatch [