Update .appveyor.yml

.appveyor.yml

+# https://www.appveyor.com/docs/windows-images-software
+
+image: Visual Studio 2022
+
 environment:
   global:
     REPO_DIR: python-appveyor-demo
@@ -43,10 +47,12 @@ matrix:
 install:
     # Install miniconda and fix headers
     - where python
+    - where python3 || true
+    - where py || true
+    - SET PATH=%PYTHON%;%PYTHON%\Scripts;%PYTHON%\Library\bin;%PATH%
     - where conda
     - SET CONDA_PATH=$(where conda)
     - echo %CONDA_PATH%
-    - SET PATH=%PYTHON%;%PYTHON%\Scripts;%PYTHON%\Library\bin;%PATH%
     - conda info
 
     # Check that we have the expected version and architecture for Python