Fixup for 7e2e2626a0

Some references were left unrenamed which caused `validate_config.yml`
to trigger.

Supersedes https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2256

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2256

This paves the way for installing other roles into `roles/galaxy` using `ansible-galaxy`,
similar to how it's done in:

- https://github.com/spantaleev/gitea-docker-ansible-deploy
- https://github.com/spantaleev/nextcloud-docker-ansible-deploy

In the near future, we'll be removing a lot of the shared role code from here
and using upstream roles for it. Some of the core `matrix-*` roles have
already been extracted out into other reusable roles:

- https://github.com/devture/com.devture.ansible.role.postgres
- https://github.com/devture/com.devture.ansible.role.systemd_docker_base
- https://github.com/devture/com.devture.ansible.role.timesync
- https://github.com/devture/com.devture.ansible.role.vars_preserver
- https://github.com/devture/com.devture.ansible.role.playbook_runtime_messages
- https://github.com/devture/com.devture.ansible.role.playbook_help

We just need to migrate to those.

This is more consistent with how we name variables. It's also less
confusing, especially given that we have `matrix_hookshot_feeds_pollTimeoutSeconds` as well.

as per documentation: "Services that need no further configuration are enabled by default" and feeds service doesn't require it

This reverts commit 65bfc1396e.

The 1.8.1 image is published now, so we can finally upgrade.

This reverts commit 05ccee9f6f.

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/1952

No docker tag published yet, [keep an eye on it](https://hub.docker.com/r/halfshot/matrix-hookshot/tags?page=1&ordering=last_updated&name=1.8.1)

Reference: https://ansible-lint.readthedocs.io/en/latest/default_rules/#var-naming

We don't really fix these, but just suppress them,
because they're like that intentionally.

We try to name variables in a way that is consistent with the
configuration key they control. If the upstream component uses
camelCase, we also need to include camelCase in the variable name.

This new version should be buildable on arm64.

See: https://github.com/matrix-org/matrix-hookshot/releases/tag/1.7.0

There's still no prebuild arm64 image, so we continue relying on
self-building there.

https://github.com/matrix-org/matrix-hookshot/releases/tag/1.4.0

all features were actually already silently supported 🎉

upstream changelog: https://github.com/matrix-org/matrix-hookshot/releases/tag/1.2.0

see Half-Shot/matrix-hookshot#167