Update mgmt-cheat-sheet.md

`metrics.thanos.compactor.retention.resolution-1h`  | 1h downsampled data retention | `10y`

`metrics.thanos.thanos-archive.enabled`  | Enable Thanos archive | `false`

`metrics.thanos.thanos-archive.secret`  | Archive object store configuration secret | `meep-thanos-archive-objstore-config`

`gc.enabled`  | Enable garbage collection | `true`

`gc.interval`  | Garbage collection interval (duration string) | `4h`

`gc.run-on-start`  | Run garbage collection on start | `true`

`gc.redis.enabled`  | Enable Redis DB garbage collection | `true`

`gc.influx.enabled`  | Enable Influx DB garbage collection | `false`

`gc.influx.exceptions`  | List of databases that must not be removed | `[]`

`gc.postgis.enabled`  | Enable PostGIS DB garbage collection | `false`

Dependency microservices and Core & Sandbox Subsystem microservices may also be modified using this configuration file. For example, specific microservices can be excluded from a platform build or deployment if not required.