Upgrade Facebook Graph API version

[nicocucuzza]

• Socialite Version: 4.2
• Laravel Version: 5.8
• PHP Version: 7.2

Description:

Facebook Graph API version is hardcoded to v3.0

src/Two/FacebookProvider.php

/**
     * The Graph API version for the request.
     *
     * @var string
     */
    protected $version = 'v3.0';

That Graph version is from May 2018 and will be no longer available in 7 months. Plus, the version parameter is not configurable in the library.

[driesvints]

Does updating the version break existing apps in any way?

[brandonburkett]

@driesvints I have updated to 3.3 (via facebook's API version drop down, back in the thread for #364 ) and it worked with socialite pinned at 3.0... but my use case is very simple w/ facebook default / no approval login app.

[driesvints]

Fixed in #408