Fix CircleCI build by making sure we apt update before installing C++ compiler
Fix CircleCI build by making sure we apt update before installing C++ compiler

pllim/astropy,MSeifert04/astropy,lpsinger/astropy,dhomeier/astropy,StuartLittlefair/astropy,astropy/astropy,aleksandr-bakanov/astropy,astropy/astropy,pllim/astropy,MSeifert04/astropy,mhvk/astropy,dhomeier/astropy,lpsinger/astropy,saimn/astropy,pllim/astropy,StuartLittlefair/astropy,larrybradley/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,astropy/astropy,stargaser/astropy,larrybradley/astropy,lpsinger/astropy,saimn/astropy,saimn/astropy,larrybradley/astropy,aleksandr-bakanov/astropy,lpsinger/astropy,aleksandr-bakanov/astropy,larrybradley/astropy,astropy/astropy,larrybradley/astropy,pllim/astropy,aleksandr-bakanov/astropy,stargaser/astropy,mhvk/astropy,saimn/astropy,pllim/astropy,astropy/astropy,mhvk/astropy,dhomeier/astropy,stargaser/astropy,mhvk/astropy,saimn/astropy,StuartLittlefair/astropy,lpsinger/astropy,MSeifert04/astropy,stargaser/astropy,mhvk/astropy,MSeifert04/astropy,dhomeier/astropy,dhomeier/astropy