Bump github.com/prometheus/client_golang from 1.12.2 to 1.13.0#3

dependabot[bot] wants to merge 1 commit intomastergrafana/postgres_exporter:masterfrom

dependabot/go_modules/github.com/prometheus/client_golang-1.13.0grafana/postgres_exporter:dependabot/go_modules/github.com/prometheus/client_golang-1.13.0Copy head branch name to clipboard