Upgrade sliding-sync (v0.99.4 -> v0.99.5)

Update borg role v1.2.4-1.7.15-1 -> v1.2.4-1.7.15-2

Upgrade Element 1.11.37 -> 1.11.38

Partially reverts 0a6b934a44.

`preferred_domain` is only used by Element and does not apply to the
`/.well-known/matrix/client` file.

Update honoroit 0.9.17 -> 0.9.18

Update element 1.11.36 -> 1.11.37

Update synapse 1.88.0 -> 1.89.0

docs: Remove mention of access token

Related to: https://matrix.org/blog/2023/07/bridges-security-updates/

Related to: https://matrix.org/blog/2023/07/bridges-security-updates/

Related to https://matrix.org/blog/2023/07/bridges-security-updates/

Add system promt variable to docs

Added the system promt variable and added a bit information for beginners

Related to: https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2375#issuecomment-1656064975

Related to: https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2375#issuecomment-1655758296

Related to: https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2375#issuecomment-1655758296

Create and set default for chatgpt prompt

make smtp tls configurable / optional

Supersedes https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2791

Fix Variable Registration bot

Update Element logo location

variable need to be named:
matrix_bot_matrix_registration_bot_bot_password

and not:
matrix_bot_matrix_registration_bot_password

Dont know if it need fixed in every rule or just change the docs

Gmessage bridge: Remove file logging, and add existing log level variable to config

* Adjust to new mrb docker versioning

* Stabilze authentication

* fix lint

* Move & document mrb password usage

* Add clean cache role

* Document clean cache

* Fix lint

* Update CHANGELOG.md

* Automate access tokens

* Improve changelog

* Make use of mrb's function to fetch API tokens

* Adjust changelog

* Use ansible.builtin.file to clear directory

* Fix typo

---------

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

Shortening the salt

The salts need to be shorter than 16 chars