Update Postmoogle 0.9.0 -> 0.9.1

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2086

Correctly refer to the placeholder

Update hookshot 2.1.0 -> 2.1.2

Make Conduit's rocksdb_max_open_files parameter configurable

Update dendrite 0.9.5 -> 0.9.6

Remove appservice database setup/config as the latest update no longer requires it.

Correctly check number of arguments when creating a dendrite account

This is probably a continuation of changes made in d7ed672f7.

Update Element 1.11.3 -> 1.11.4

Update Cinny 2.1.2 -> 2.1.3

.. instead of `['']`.

The final result in the `env` file will be the same (`POSTMOOGLE_ADMINS=`)
in both cases, but it's better to avoid confusion.

Update grafana 9.1.1 -> 9.1.2

postmoogle 0.9.0

This is done in anticipation of this option's removal in the
upcoming Synapse v1.66.0 release (likely tomorrow).

See: https://matrix-org.github.io/synapse/v1.66/upgrade.html#delegation-of-email-validation-no-longer-supported

Update ddclient v3.9.1-ls96 -> v3.9.1-ls97

We do this for all other supported homeservers.

A "public by default" homeserver is a bad idea for most people.

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2076

out dated doc: Synapse has a rate limiting config option

postmoogle: set safe defaults to POSTMOOGLE_USERS

postmoogle: remove noowner and federation