Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2669

Removed in 04b9483f0d (2022-11-28) when switching from matrix-postgres to
the devture-postgres external Ansible role.
More details: https://github.com/spantaleev/matrix-docker-ansible-deploy/blob/master/CHANGELOG.md#matrix-postgres-has-been-replaced-by-the-comdevtureansiblerolepostgres-external-role

The `import_synapse_sqlite_db.yml` file and documentation has been adapted somewhat compared to before, so that:

- it doesn't try to start Postgres automatically. You need to handle
  this part manually
- it doesn't rely on the integrated Postgres and may potentially work
  with external Postgres instances just the same
- it doesn't wipe out the whole database anymore. By default, we assume
  it's empty anyway and there's no need for such things. If it's not,
  then it's also probably dangerous to be so destructive.

This is all completely untested, but will hopefully work.

It's the same as `matrix_docker_network` for now, so this practically
doesn't change anything.

Update signald version

0.23.1 no longer syncs groups properly, the solution is to use 0.23.2, which works as expected

Update IRC appservice to 0.38.0

https://github.com/matrix-org/matrix-appservice-irc/releases/tag/0.38.0

Update hookshot 3.2.0 -> 4.0.0

Update configuring-playbook.md

update grafana (9.4.7 -> 9.5.1); update ntfy (2.3.1 -> 2.4.0)

Fixup related to https://github.com/matrix-org/synapse/pull/15431

Related to:

- https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2656
- e4a25d022c

Related to:

- https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2656
- 4af0aec54d

Update element v1.11.29 -> v1.11.30

Update synapse 1.81.0 -> 1.82.0

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2654

buscarron and honoroit - add basic auth for metrics

* Update homeserver.yaml.j2

* Update configuring-playbook-ldap-auth.md

* Update homeserver.yaml.j2

These roles now obey
`devture_systemd_docker_base_container_image_pull_method` and `devture_systemd_docker_base_container_network_creation_method`
and can work on systems which don't have the Docker SDK for Python
installed by avoiding the various Ansible Docker modules and using raw
`docker` commands for pulling images and creating networks.

Bump ansible-community/ansible-lint-action from 6.14.4 to 6.15.0

Bumps [ansible-community/ansible-lint-action](https://github.com/ansible-community/ansible-lint-action) from 6.14.4 to 6.15.0.
- [Release notes](https://github.com/ansible-community/ansible-lint-action/releases)
- [Commits](https://github.com/ansible-community/ansible-lint-action/compare/v6.14.4...v6.15.0)

---
updated-dependencies:
- dependency-name: ansible-community/ansible-lint-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

fix: add missing word

Added a nix flake

Fix recaptcha vars ansible-vault compatibility

Update mautrix-discord 0.2.0 -> 0.3.0

Update mautrix-whatsapp 0.8.3 -> 0.8.4

Update borgmatic 1.7.11 -> 1.7.12

Update configuring-playbook-synapse.md

This change adds a section that lets the reader know that it is possible to enable synapse metrics and references the relevant documentation.

It aims to be short and concise, leaving the specifics to the referenced documentation, while still giving the reader a good idea of what it is and what it is for.

Removing warning that no longer applies

Similar to:
362954aeab

This warning was added because of:
https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2090

The problem has since been fixed by:
e9e84341a9

This current patch was provoked by:
https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2352

Update element 1.11.28 -> 1.11.29