automation: Update docker-gitlab_runner Docker tag to v16.6.1

See merge request !191

automation: Update docker-gitlab Docker tag to v16.6.1

See merge request !186

automation: Update docker-nextcloud_collabora Docker tag to v23.05.5.4.1

See merge request !180

automation: Update docker-matrix_riotweb Docker tag to v1.11.51

See merge request !181

automation: Update docker-mastodon_elasticsearch Docker tag to v8.11.3

See merge request !182

automation: Update docker-keycloak_database Docker tag to v15.5

See merge request !183

automation: Update docker-matrix_database Docker tag to v15.5

See merge request !184

automation: Update docker-factorio Docker tag to v1.1.100

See merge request !185

automation: Update docker-monitoring_grafana Docker tag to v10.2.2

See merge request !187

automation: Update docker-monitoring_influxdb Docker tag to v2.7.4

See merge request !188

automation: Update docker-monitoring_prometheus Docker tag to v2.48.1

See merge request !189

automation: Update docker-matrix_synapse Docker tag to v1.97.0

See merge request !190

automation: Update docker-ntfy Docker tag to v2.8.0

See merge request !192

automation: Update docker-traefik Docker tag to v2.10.7

See merge request !194

automation: Update docker-mastodon Docker tag to v4.2.3

See merge request !195

automation: Update docker-traefik_acmedumper Docker tag to v2.8.3

See merge request !197

automation: Update docker-mastodon_telegraf Docker tag to v1.29

See merge request !198

automation: Update docker-telegraf Docker tag to v1.29

See merge request !199

Reduce idle time from 30 minutes to 10 minutes.

Reduce max build before destryoing the machine to 100. It should not be
the usual factor to destroy machines.

Increase concurrency to the hetzner default limit.

Housekeeping by default is 10 minutes at 12 afternoon. As housekeeping
might induce high iowait on the instance rendering it unresponsive (and
crippeling other services on the server if no fs quotas are enforced)
let's move this to a not so critical time.