Merge branch 'renovate/github.com-prometheus-client_golang-1.x' into 'master'

...s/client_golang/prometheus/internal/go_runtime_metrics.go

...theus/client_golang/prometheus/process_collector_other.go

...us/client_golang/prometheus/promhttp/instrument_client.go

...us/client_golang/prometheus/promhttp/instrument_server.go

...om/prometheus/client_golang/prometheus/promhttp/option.go

...r/github.com/prometheus/client_golang/prometheus/value.go

vendor/github.com/prometheus/common/expfmt/encode.go

vendor/github.com/prometheus/common/expfmt/text_parse.go

vendor/github.com/prometheus/procfs/Makefile

vendor/github.com/prometheus/procfs/Makefile.common

vendor/github.com/prometheus/procfs/README.md

vendor/github.com/prometheus/procfs/cmdline.go

vendor/github.com/prometheus/procfs/doc.go

vendor/github.com/prometheus/procfs/fixtures.ttar

vendor/github.com/prometheus/procfs/mdstat.go

vendor/github.com/prometheus/procfs/net_ip_socket.go

vendor/github.com/prometheus/procfs/netstat.go

vendor/github.com/prometheus/procfs/proc_cgroup.go

vendor/github.com/prometheus/procfs/proc_stat.go

vendor/github.com/prometheus/procfs/zoneinfo.go