Update Synapse 1.55.2 -> 1.56.0

The `halfshot/matrix-hookshot` container images published to Docker Hub
(as of 2022-04-05, at least) are only available for `amd64`, not for
`arm64`. Self-building on arm64 is necessary.

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1728

It should be noted that a `roiarthurb/matrix-hookshot` container image is available,
which is available for the arm64 platform, but that's non-official and doesn't
contain an amd64 build, so it's of limited use.

Fix matrix-bridge-hookshot container image

* add borg backup

* lint fix

* add exlclude patterns

* missed in the #1726 fix for honoroit

* feedback

* Fix indentation

* feedback

* feedback

* feedback

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

Add hookshot self build for arm64 and amd64

Dendrite 0.7.0

[STEAM] Move Docker source repository to a fixed version

Permissions fix

This reverts commit 0103d92df4.

The same fix has now been merged upstream
(https://gitlab.com/beeper/mx-puppet-monorepo/-/merge_requests/35), so
we don't need to use a fork anymore.

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1719

Upgrade Hookshot (1.2.0 -> 1.3.0)

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1719

We're using a pinned commit of this fork, which patches up the npm/yarn
lock files, so that self-building of the Discord and Slack bridges can
work after GitHub's deprecation of the `git://` and `ssh://` protocols
(https://github.blog/2021-09-01-improving-git-protocol-security-github/).

When the issue gets fixed in the Beeper fork (via
https://gitlab.com/beeper/mx-puppet-monorepo/-/merge_requests/35 or
otherwise), we'll get back on it.

Fix Facebook presence config key

Add note about Prometheus retention policy

Update Element 1.10.7 -> 1.10.8

Updated: matrix-googlechat to v0.3.1

This switches the playbook from devture/rust-synapse-compress-state (a
container image which wraps the upstream-prebuilt amd64 binary of
rust-synapse-compress-state) to registry.gitlab.com/mb-saces/rust-synapse-compress-state
(https://gitlab.com/mb-saces/rust-synapse-compress-state), which builds
rust-synapse-compress-state from source and provides a multi-arch image
that currently works on amd64 and arm64.

Ideally, we'll stop using `:latest` and arm32 support will be made
available upstream as well at some point.
Discussed here: https://gitlab.com/mb-saces/rust-synapse-compress-state/-/issues/1

This makes it easier to use another container image for
rust-synapse-compress-state, which may be storing the binary at another
path.

Synapse 1.55.0 -> Synapse 1.55.2

This is a minor hotfix, needs to be bumped though or new deploys will break (existing deploys not affected by bug).

Update mjolnir antispam commit hash

Changed the commit hash in matrix_synapse_ext_spam_checker_mjolnir_antispam_git_version to latest. Fixes a Synapse ImportError with mjolnir v1.4.1 leading to a Synapse crash-loop.

Update Mjolnir from 1.3.2 to 1.4.1

`roles/matrix-synapse/vars/workers.yml` has not been updated here,
because running `roles/matrix-synapse/files/workers-doc-to-yaml.awk`
seems to cause some trouble with the current `workers.md` file
available at https://github.com/matrix-org/synapse/raw/master/docs/workers.md,
namely lots of:

> FIXME: ADDITIONAL CONDITIONS REQUIRED: to be enabled manually

lines and commented out regex lines.

This is something that remains to be investigated/fixed.

Update mautrix-whatsapp 0.2.4 -> 0.3.0

add detailed docs about hookshot's URLs

Don't recommend that the Dimension admin interface be opened in a web browser

Fix index in external_prometheus.yml.example.j2

Update IRC appservice bridge

For an unknown reason prometheus ignored the given "numeric" index and replaced it by 1. This made it not work properly, plus multiple workers of same types were not differentiable. With a "string" index, it works as intended.