* update http2 config due to deprecation

the previous way to let `http2` follow a `listen` was depracated, it
moved to `http2 on;`

* enable quic and http3

I hope the comments are somewhat understandable. if someone can describe
the `reuseport` part more concise, please do.

docs/maintenance-upgrading: indent "either" commands

improves readability

chore(deps): update ghcr.io/t2bot/matrix-media-repo docker tag to v1.3.7

chore(deps): update vectorim/element-web docker tag to v1.11.72

chore(deps): update ghcr.io/element-hq/synapse docker tag to v1.111.1

* Update SaaS section in readme

* Improve sentence wording

* Improve sentence flow

---------

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

chore(deps): update dependency redis to v7.2.5-0

chore(deps): update registry.gitlab.com/etke.cc/postmoogle docker tag to v0.9.20

chore(deps): update registry.gitlab.com/etke.cc/honoroit docker tag to v0.9.24

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3449

Closes https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/3450

chore(deps): update dependency grafana to v11.1.3-0

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3445

This reverts commit 90e3f4cba8.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3445

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/3442

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/3442

* Created role for synapse-usage-exporter

* Apply suggestions from code review

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Renaming docker variables and moving synapse stats config location

* Respect devture_systemd_docker_base_docker_service_name

---------

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

chore(deps): update ajbura/cinny docker tag to v4.0.3

Cinny includes nginx configuration which does URL rewrites now, as seen
here: https://raw.githubusercontent.com/cinnyapp/cinny/dev/docker-nginx.conf

That said, we have our own nginx configuration for Cinny, because we'd
like to run ngin as non-root and on a non-privileged port (80 -> 8080).

For this reason, we override `/etc/nginx/nginx.conf` and need to
duplicate what we see in `/etc/nginx/conf.d/default.conf` with our own
`server` block (which listens on port 8080).

Added new fields to MMR config template

chore(deps): update dependency grafana to v11.1.2-0

chore(deps): update registry.gitlab.com/etke.cc/honoroit docker tag to v0.9.23

* buscarron v1.4.2

* Add more spaces before comments

---------

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

chore(deps): update registry.gitlab.com/etke.cc/postmoogle docker tag to v0.9.19

Added MMR metrics proxying support

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3434

chore(deps): update joseluisq/static-web-server docker tag to v2.32.1

chore(deps): update awesometechnologies/synapse-admin docker tag to v0.10.3

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3432

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3430

Related to c6d8a68e77

Related to https://github.com/element-hq/synapse/pull/17421

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3427