chore(deps): update dependency etherpad to v1.9.6-0

chore(deps): update halfshot/matrix-hookshot docker tag to v5

chore(deps): update dock.mau.dev/mautrix/telegram docker tag to v0.15.1

add automatic registration of chatgpt bot's user (if password is provided)

MMR reverse proxy updates

`matrix_media_repo_identifier` is already defined in the role defaults,
which is a better role to have it anyway.

Fix "SSL_do_handshake() failed" in nginx reverse-proxy

In nginx reverse-proxy, when the upstream server relies on SNI, the reverser-proxy may return 502 by follow error:
```
*10 SSL_do_handshake() failed (SSL: error:0A000410:SSL routines::sslv3 alert handshake failure:SSL alert number 40) while SSL handshaking to upstream, client: 172.19.0.1, server: example.host, request: "GET /.well-known/matrix/client HTTP/2.0", upstream: "https://<ip>/.well-known/matrix/client", host: "<domain>"
```
This problem often arises when the upstream server is behind the CDN, setting `proxy_ssl_server_name` to `on` will solve it.

chore(deps): update vectorim/element-web docker tag to v1.11.52

chore(deps): update dependency grafana to v10.2.3-0

* Updated MMR docs with updated fields in main.yaml

* Removed uneeded placeholder db password

* Update prerequisites.md

Document that sudo is required.

* Relocate sudo requirement in prerequisites and reword

---------

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

Added Synapse connection pool config variables

chore(deps): update dock.mau.dev/mautrix/whatsapp docker tag to v0.10.5

chore(deps): update dock.mau.dev/mautrix/gmessages docker tag to v0.2.3