`docs/maintenance-synapse.md` and `roles/custom/matrix-synapse/defaults/main.yml`
already contains documentation about these variables and the default values we set.

The playbook is not happy with the previous state of this patch so this commit hopefully fixes it

Autotuned figures have been bumped in consultation with other community members as to a reasonable level. Please note these defaults are more on the one of each workers side than they are on the monolith Side.

This commit adds various cache related vars to main.yml for Synapse.

Some are auto tune and some are just adding explicit ways to control upstream vars.

Synapse has the ability to as it calls in its config auto tune caches.

This ability lets us set very high cache factors and then instead limit our resource use.

Defaults for this commit are 1/10th of what Element apparently runs for EMS stuff and matrix.org on Cache Factor and upstream documentation defaults for auto tune.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/3102

We likely weren't handling the `matrix_playbook_reverse_proxy_type: other-traefik-container`
case well before. Now, we should be.

Issues and Pull Requests were not migrated to the new
organization/repository, so `matrix-org/synapse/pull` and
`matrix-org/synapse/issues` references were kept as-is.

`matrix-org/synapse-s3-storage-provider` references were also kept,
as that module still continues living under the `matrix-org` organization.

This patch mainly aims to change documentation-related things, not actual
usage in full yet. For polish that, another more comprehensive patch is coming later.

Supersedes https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/3110

Update broken links in reverse proxies docs

Update dock.mau.dev/mautrix/discord Docker tag to v0.6.5

Update dock.mau.dev/mautrix/gmessages Docker tag to v0.2.4

Updated Grafana dashboard for MMR

Update vectorim/element-web Docker tag to v1.11.54

Update dependency prometheus to v2.49.1-0

Seems like calling these tasks got removed at some point
while merge the `bye-bye-nginx-proxy` branch.

Update Draupnir to 1.86.0 and include changelog entry about new License

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3095

This also supposedly improves the default container network for
`matrix-static-files` for the `other-traefik-container` reverse-proxy
type.

Update dependency prometheus to v2.49.0-0

Not that it seems necessary right now, but it makes it consistent with
all other roles.

Not that it seems necessary right now, but it makes it consistent with
all other roles.