Update prometheus-client to 0.19.0#771

pyup-bot wants to merge 1 commit intomasterscieloorg/opac_proc:masterfrom

pyup-update-prometheus-client-0.5.0-to-0.19.0scieloorg/opac_proc:pyup-update-prometheus-client-0.5.0-to-0.19.0Copy head branch name to clipboard