[py] Add return type annotation to execute_script and execute_async_script

py/selenium/webdriver/remote/webdriver.py

@@ -506,7 +506,7 @@ def get_pinned_scripts(self) -> list[str]:
         """
         return list(self.pinned_scripts)
 
-    def execute_script(self, script: str, *args):
+    def execute_script(self, script: str, *args) -> dict[str, Any]:
         """Synchronously Executes JavaScript in the current window/frame.
 
         Args: