circle: update golang-builder image version
circle: update golang-builder image version

Stackdriver/stackdriver-prometheus,kzittritsch/prometheus,keegancsmith/prometheus,kangwoo/prometheus,slok/prometheus,gottwald/prometheus,AlekSi/prometheus,datajet-io/prometheus,kangwoo/prometheus,PrFalken/prometheus,agaoglu/prometheus,Gouthamve/prometheus,AlekSi/prometheus,Colstuwjx/prometheus,prometheus/prometheus,agaoglu/prometheus,Stackdriver/stackdriver-prometheus,dsymonds/prometheus,JavierZunzunegui/prometheus,yanghongkjxy/prometheus,dsymonds/prometheus,kangwoo/prometheus,dsymonds/prometheus,Colstuwjx/prometheus,PrFalken/prometheus,Stackdriver/stackdriver-prometheus,slok/prometheus,kzittritsch/prometheus,amorken/prometheus,amorken/prometheus,GoogleCloudPlatform/prometheus,alileza/prometheus,kangwoo/prometheus,keegancsmith/prometheus,SaltedMan/prometheus-annotated,SaltedMan/prometheus-annotated,Colstuwjx/prometheus,prometheus/prometheus,Stackdriver/stackdriver-prometheus,brancz/prometheus,tomwilkie/prometheus,tomwilkie/prometheus,brancz/prometheus,alileza/prometheus,alileza/prometheus,GoogleCloudPlatform/prometheus,Conorbro/prometheus,GoogleCloudPlatform/prometheus,amorken/prometheus,prometheus/prometheus,SaltedMan/prometheus-annotated,AlekSi/prometheus,PrFalken/prometheus,slok/prometheus,PrFalken/prometheus,Gouthamve/prometheus,brancz/prometheus,datajet-io/prometheus,AlekSi/prometheus,brancz/prometheus,agaoglu/prometheus,keegancsmith/prometheus,GoogleCloudPlatform/prometheus,datajet-io/prometheus,JavierZunzunegui/prometheus,gottwald/prometheus,amorken/prometheus,prometheus/prometheus,Conorbro/prometheus,gottwald/prometheus,alileza/prometheus,prometheus/prometheus,yanghongkjxy/prometheus,gottwald/prometheus,yanghongkjxy/prometheus,tomwilkie/prometheus,kzittritsch/prometheus,yanghongkjxy/prometheus,JavierZunzunegui/prometheus,alileza/prometheus,SaltedMan/prometheus-annotated,Conorbro/prometheus,Gouthamve/prometheus,JavierZunzunegui/prometheus,slok/prometheus,agaoglu/prometheus,keegancsmith/prometheus,kzittritsch/prometheus,GoogleCloudPlatform/prometheus,Colstuwjx/prometheus,tomwilkie/prometheus,dsymonds/prometheus,Conorbro/prometheus,keegancsmith/prometheus,datajet-io/prometheus,Gouthamve/prometheus