The "download_file()" method should set the user-agent in headers for the call to "requests.get()"

[mdmintz]

The download_file() method should set the user-agent in headers for the call to requests.get()

---

This change may prevent cases where calling requests.get() could get blocked.

Here's the method with args: download_file(file_url, destination_folder=None)

[mdmintz]

This was resolved in 4.45.0 - https://github.com/seleniumbase/SeleniumBase/releases/tag/v4.45.0