Allow open_browser=False

[kuzmoyev]

https://discord.com/channels/920269602771070976/920271575813615666/1242407353526259722

web-1  |     calendar = GoogleCalendar(email)
web-1  |                ^^^^^^^^^^^^^^^^^^^^^
web-1  |   File "/usr/local/lib/python3.12/site-packages/gcsa/googlecalendar.py", line 71, in _init
web-1  |     super().init(
web-1  |   File "/usr/local/lib/python3.12/site-packages/gcsa/services/baseservice.py", line 19, in __init
web-1  |     super().init(*args, **kwargs)
web-1  |   File "/usr/local/lib/python3.12/site-packages/gcsa/services/authentication.py", line 66, in _init
web-1  |     self.credentials = self._get_credentials(
web-1  |                        ^^^^^^^^^^^^^^^^^^^^^^
web-1  |   File "/usr/local/lib/python3.12/site-packages/gcsa/_services/authentication.py", line 110, in _get_credentials
web-1  |     credentials = flow.run_local_server(host=host, port=port, bind_addr=bind_addr)
web-1  |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
web-1  |   File "/usr/local/lib/python3.12/site-packages/google_auth_oauthlib/flow.py", line 444, in run_local_server
web-1  |     webbrowser.get(browser).open(auth_url, new=1, autoraise=True)
web-1  |     ^^^^^^^^^^^^^^^^^^^^^^^
web-1  |   File "/usr/local/lib/python3.12/webbrowser.py", line 66, in get
web-1  |     raise Error("could not locate runnable browser")
web-1  | webbrowser.Error: could not locate runnable browser

flow.run_local_server(host=host, port=port, open_browser=True/False)