Merge branch 'bugfix/idf_tools_virtualenv_v4.1' into 'release/v4.1'

idf_tools.py: fix install-python-env failure with virtualenv 20.0.0 (backport v4.1)

See merge request espressif/esp-idf!7552

tools/idf_tools.py

@@ -1185,7 +1185,7 @@ def action_install_python_env(args):
             subprocess.check_call([sys.executable, '-m', 'pip', 'install', '--user', 'virtualenv'],
                                   stdout=sys.stdout, stderr=sys.stderr)
 
-        subprocess.check_call([sys.executable, '-m', 'virtualenv', '--no-site-packages', idf_python_env_path],
+        subprocess.check_call([sys.executable, '-m', 'virtualenv', idf_python_env_path],
                               stdout=sys.stdout, stderr=sys.stderr)
     run_args = [virtualenv_python, '-m', 'pip', 'install', '--no-warn-script-location']
     requirements_txt = os.path.join(global_idf_path, 'requirements.txt')