Upgrade Hydrogen (0.2.19 -> 0.2.23)

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1544

Added writable /tmp dir for Mautrix Signal Bridge

Upgrade Heisenbridge (1.9.0 -> 1.10.0)

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1517

Update configuring-playbook-dimension.md

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1498

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1488

Discussed here:
- https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1522#issuecomment-1008381512
- https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/1524#issuecomment-1008477510

update new variable for matrix-awx, update documentation

matrix-bot-honoroit: disable self-build by default, update to v0.9.1

pin appservice-webhooks version v1.0.2-01

Hopefully fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1518

Discussed here: https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1510

This is an attempt to address this:
dc893485d1 (commitcomment-63097721)

Related to the work done in https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/818

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/818

This is the equivalent of b1b4ba501f for the matrix-dendrite role.

This brings matrix-dendrite.service in line with all the other services.

Doing this further simplifies examples/vars.yml.

We're trying to move away from implementation-specific variables,
hoping for a clean (implementation-neutral) examples/vars.yml file.

Doing this seems more reasonable and simpler.

Also get rid of `--tags=update-user-password` in the
`matrix-dendrite` role, as what we had doesn't work.

We may be able to do it with some Ansible helper or something else.
For now, we'll omit this feature.

We also need to fix `--tags=register-user`. This tag is currently
defined in both the `matrix-synapse` and `matrix-dendrite` roles.

All the `matrix_s3_*` stuff happens in the `matrix-synapse` role.

If we are to have such S3 support for Dendrite, we should probably
extract it out of the `matrix-synapse` role (into a `matrix-s3` role or
`matrix-goofys`, etc.) and wire `matrix-dendrite` accordingly.

This may or may not be done in the future though. For now, I'm
cleaning things up in the `matrix-dendrite` role.