2021-12-14 release

What's Changed

• Staging-facil: bump container versions 0.6.18 -> 0.6.19. by @branlwyd in #1190
• terraform: configure cluster-autoscaler in EKS by @tgeoghegan in #1191
• terraform: configure pod autoscaling in staging by @tgeoghegan in #1194
• terraform: configure on demand node group for EKS by @tgeoghegan in #1195
• terraform: update Grafana, Prometheus, exporters by @tgeoghegan in #1198
• build(deps): bump golang from 1.17.4 to 1.17.5 in /workflow-manager by @dependabot in #1202
• build(deps): update requirement from ~> 3.68.0 to ~> 3.69.0 in /terraform by @dependabot in #1203
• build(deps): bump hyper from 0.14.15 to 0.14.16 in /facilitator by @dependabot in #1206
• build(deps): bump google.golang.org/api from 0.61.0 to 0.62.0 in /workflow-manager by @dependabot in #1208
• build(deps): bump k8s.io/client-go from 0.22.4 to 0.23.0 in /deploy-tool by @dependabot in #1210
• build(deps): bump serde from 1.0.130 to 1.0.131 in /facilitator by @dependabot in #1212
• build(deps): bump github.com/aws/aws-sdk-go from 1.42.19 to 1.42.22 in /workflow-manager by @dependabot in #1213
• build(deps): bump google.golang.org/api from 0.60.0 to 0.62.0 in /deploy-tool by @dependabot in #1209
• build(deps): bump serde_test from 1.0.130 to 1.0.131 in /facilitator by @dependabot in #1214
• terraform: configure alert for prometheus disk by @tgeoghegan in #1199
• build(deps): bump async-trait from 0.1.51 to 0.1.52 in /facilitator by @dependabot in #1215
• Configure Key Rotator to back up secrets to AWS/GCP secret store. by @branlwyd in #1201

Full Changelog: 0.6.19...0.6.20