Laravel update broke getDefaultDriver

https://github.com/laravel/framework/commit/8b523557560765d19e67e190c7272c6634f3fdc4#diff-e10df0cf984701aece6ffd81877713a1

This laravel update requires getDefaultDriver to be declared public
Update changelog.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.2'