Update Colos theme submodule
Update Colos theme submodule

Update to
ahaasler/hexo-theme-colos@ca4687cad8cbad5c0ad1ba13a9f7e9d5b01667d7.

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