Use orElseGet for loading Config

[vladimirjegorov]

Hi,
Just a small suggestion. It is more reasonable to load config only if the original config is null, and not load always and then comparing both (#See Optional.orElse vs orElseGet) :)

headless-chrome/src/main/java/software/reinvent/headless/chrome/HeadlessDriver.java

Line 36 in 3758865

Config configToUse = Optional.ofNullable(config).orElse(ConfigLoader.load());