tests: mark test_setup.py as xfail until #243 is fixed

Author: BoboTiG

mss/tests/test_setup.py

@@ -17,6 +17,7 @@
 CHECK = "twine check dist/*".split()
 
 
+@pytest.mark.xfail("Issue #243)
 def test_sdist():
     output = check_output(SDIST, stderr=STDOUT, text=True)
     expected = f"""
@@ -110,6 +111,7 @@ def test_sdist():
     check_call(CHECK)
 
 
+@pytest.mark.xfail("Issue #243)
 def test_wheel():
     output = check_output(WHEEL, stderr=STDOUT, text=True)
     expected = f"""