Upgrading deprecated upload-artifact action

Author: lmbelo

.github/workflows/pypi.yml

@@ -79,7 +79,7 @@ jobs:
         python setup.py bdist_wheel --plat-name=win32
       
     - name: Save wheel
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         path: dist/*.whl
         if-no-files-found: error      
@@ -120,7 +120,7 @@ jobs:
         python setup.py bdist_wheel --plat-name=win_amd64
       
     - name: Save wheel
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
       with:
         path: dist/*.whl
         if-no-files-found: error