TST: use modern path fixture instead of py.path one

Signed-off-by: Henry Schreiner <[email protected]>

Author: henryiii

tests/conftest.py

@@ -132,8 +132,8 @@ def disable_pip_version_check():
 
 
 @pytest.fixture(scope='session')
-def pep518_wheelhouse(tmpdir_factory):
-    wheelhouse = tmpdir_factory.mktemp('wheelhouse')
+def pep518_wheelhouse(tmppath_factory):
+    wheelhouse = tmppath_factory.mktemp('wheelhouse')
     meson_python = str(package_dir.parent.parent)
     # Populate wheelhouse with wheel for the following packages and
     # their dependencies.  Wheels are downloaded from PyPI or built