If someone is using Dendrite and enabling Grafana, we'll no longer download Synapse dashboards. If someone is not using node-exporter, we'll no longer download node exporter dashboards. Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2133
Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1939
Also includes the dashboards for Synapse and for Node Exporter. Again has only been tested on debian amd64 so far, but the grafana docker image is available for arm64 and arm32. Nice.