fixImports=true doesn't fix wildcard imports

[dkirrane]

I'm using version 1.7.4 but noticed wildcard imports do not get fixed.

[talios]

This would be an issue for the upstream google format project to address, this plugin only wraps that library.

Since the upstream project moved to requiring java 9+ I'd not updated this plugin further as I still required Java 8 support myself - tho I think it's about time I updated it to the current release.