skip test on Windows

Windows tests are failing when creating the environment with
exit code `3221225781` / `0xC0000135` / `STATUS_DLL_NOT_FOUND`

Thus this test can't be run on Windows since a simple symlink to python executable does not seem to work.

Author: mayeut

Lib/test/test_venv.py

@@ -745,6 +745,7 @@ def test_cli_without_scm_ignore_files(self):
             self.get_text_file_contents('.gitignore')
 
     @requires_subprocess()
+    @unittest.skipIf(os.name == 'nt', 'not relevant on Windows')
     @unittest.skipUnless(can_symlink(), 'Needs symlinks')
     def test_executable_symlink(self):
         """