fix: custom_labels on SidekiqStatsCollector and SidekiqProcessCollector#355

mbarany wants to merge 3 commits intodiscourse:maindiscourse/prometheus_exporter:mainfrom

mbarany:fix-custom-labels-on-sidekiq-stats-collectormbarany/prometheus_exporter:fix-custom-labels-on-sidekiq-stats-collectorCopy head branch name to clipboard