Update Synapse from 1.40.0 to 1.41.0

Fix appservice-irc version

Fix incorrect docker version tag for matrix-appservice-irc

prometheus & its exporter updates

Related to https://github.com/devture/exim-relay/pull/11

Postgres Minor Updates

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1242

Add beeper LinkedIn bridge

This bridge doesn't support SQLite anyway, so it's not necessary
to carry around configuration fields and code for migration from SQLite
to Postgres. There's nothing to migrate.

This configuration is supposed to be kept clean and not reference variables defined in other roles.

`group_vars/matrix_servers` redefines these to hook our various roles together.

Update IRC appservice to version v0.30.0

https://github.com/matrix-org/matrix-appservice-irc/releases/tag/0.30.0

Certbot update v1.18.0

Update the docker image version for mautrix-telegram

Update mautrix links

Update readme mautrix bridges

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1236

Feature/signal config

Upgrade Element (1.8.0 -> 1.8.1)

Mautrix-Facebook repo location update, pin v0.3.1

Element web/desktop has just been updated to fix some regressions in regard to VoIP.

The Github link is just a redirect to Tulir's own GitLab, so I replaced the self-build link
The docker container repository was rearranged hierarchically (dock.mau.dev/tulir/mautrix-facebook -> dock.mau.dev/mautrix/facebook)
Tagged versions have been made available, thus :latest -> :v0.3.1

Pin Heisenbridge to 1.0.0