The new prompt makes use of the new `baibot_conversation_start_time_utc`
prompt variable, which is not a moving target (like `baibot_now_utc`)
and as such allows prompt caching to work.

Ref: https://platform.openai.com/docs/guides/prompt-caching

Since 2024-10-02, `gpt-4o` is actually the same as `gpt-4o-2024-08-06`.

We previously used `gpt-4o-2024-08-06`, because it was pointing to a
much better (longer context) model. Since they're both the same now,
we'd better stick to the unpinned model and make it easier for future
users to get upgrades.

Update nginx Docker tag to v1.27.2

synapse-admin: authenticated media and options to delete media and redact events on user removal

Update matrixdotorg/mjolnir Docker tag to v1.8.1

Update docker.io/metio/matrix-alertmanager-receiver Docker tag to v2024.10.2

Update matrixdotorg/mjolnir Docker tag to v1.8.0

Update dependency grafana to v11.1.7-0

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/3556

Update ghcr.io/element-hq/synapse Docker tag to v1.116.0

Update vectorim/element-web Docker tag to v1.11.79