Updated signald docker image path

Fix email sending broken by #1406

* Upgrade Mjolnir from 1.1.20 to version 1.2.1

https://hub.docker.com/r/matrixdotorg/mjolnir/tags

using the "latest" tag seems inefficient as it doesn't actually redirect to the latest release

In any case, the latest release is now 1.2.1

docker pull matrixdotorg/mjolnir:v1.2.1

* Fixup

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

Add support for creation of Jitsi internal authentication users in vars.yml

The check was checking for an empty string in `matrix_jitsi_prosody_auth_internal_accounts`,
which is unlikely to happen. We should check for an empty list instead.

The check was not validating username/password values, so telling the user that they need a non-empty
username/password is misleading. It was merely checking if there's at least one entry in the list.

This patch adjusts the check and message accordingly.

This is useful when Synapse is using a worker setup. In that case,
we don't want appservices to connect to `matrix-synapse:8008`, because
not all APIs are exposed there.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1449

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1447

Seems like there's such a variable in the
`matrix-bridge-appservice-slack` role, which is probably where it got
copied over from.

Run `workers-doc-to-yaml.sh`

Fix comments about `_database_*` variables

Add self-build for Dimension (arm64 support)

Add a self-build option for the Dimension Dockerfile.
 - This helps further support arm64 hosts (i.e. A1.Flex w/Oracle)

Was renamed in 087dbe4ddc

It is unclear to me if there is anything you actually need to adjust with these variables. It looks like that is done automatically in `matrix_servers`.

1472958e25 reverted some of the v3 changes. I'm not sure why. Running the `workers-doc-to-yaml.sh` script now puts them back 🤷‍♂️.

Update Grafana from 8.3.0 to 8.3.1 due to Security Flaw

https://grafana.com/blog/2021/12/07/grafana-8.3.1-8.2.7-8.1.8-and-8.0.7-released-with-high-severity-security-fix/

Related to c08880d175

Update Element Web Version (v1.9.5 -> v1.9.6)

* Update importing-postgres.md

Additional deatails, mostly on repeating import. Structure troubleshouting section.

* Update importing-postgres.md

removing -K

* Fix path typo

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

Update signal bridge configuration template

Update prometheus (v2.30.3 -> v2.31.1)

Update redis (6.2.4 -> 6.2.6)

Update version grafana (8.2.2 -> 8.3.0)

Update importing-postgres.md

typos an suggestion to expand search/replace statement to not replace on wrong places.

Ansible 2.10 & AWX 19.4 compatibility

Support encrypted matrix_synapse_macaroon_secret_key

Update matrix-bridge-mautrix-telegram version