Fixes running test262-esnext failed with installed python3.9 on win32 with space in path

Fixes jerryscript-project#4852

JerryScript-DCO-1.0-Signed-off-by: Yonggang Luo [email protected]

Author: lygstate

tools/runners/util.py

@@ -72,4 +72,4 @@ def get_platform_cmd_prefix():
 
 def get_python_cmd_prefix():
     # python script doesn't have execute permission on github actions windows runner
-    return get_platform_cmd_prefix() + [sys.executable or 'python']
+    return [sys.executable or 'python']