Update Colos theme submodule
Update Colos theme submodule

Update to
ahaasler/hexo-theme-colos@5a6fa5ff90c0559d10bcb8b8684b640f6dc4d62d.

ahaasler/hexo-theme-colos-multilingual-demo,ahaasler/hexo-theme-colos-demo,ahaasler/hexo-theme-colos-multilingual-demo