Add .gitattributes with checking out with lf line endings

Fixup for f49e3f1e02.

It appears that many servers are incredibly slow, so the value was
misreported and more are online than previously estimated.

Supersedes https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/2961

Related to e87f5c11d7

Hopefully, this makes it clearer that it's not just "public rooms"
that will now be exposed,
but rather "public rooms which are also published to the room directory".

This brings the values up-to-date as of the latest indexing run done
today. Due to a bug, the previous values were somewhat off.
The new numbers are different and actually demonstrate that the situation is
much worse than initially imagined.

Update apache example for support discovery

Update ajbura/cinny Docker tag to v3

Update MSC1929 integration

It seems like with the default versioning detection strategy (`docker`),
the version is detected up to the hyphen:

> Renovate tries to follow the most common conventions that are used to tag Docker images.
> In particular, Renovate treats the text after the first hyphen as a type of platform/compatibility indicator.

Perhaps with `semver` would be more appropriate for this image.

More details in: https://docs.renovatebot.com/modules/versioning/

Update devture/matrix-corporal Docker tag to v2.6.0

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2953

Fix matrix_synapse_oidc_providers parsing

Update matrixdotorg/matrix-user-verification-service Docker tag to v3

Update ghcr.io/matrix-org/rageshake Docker tag to v1.11.0

Update folivonet/matrix-sms-bridge Docker tag to v0.5.8

Configure renovate to automatically open pull requests for docker image updates

Hopefully, this makes it run faster and prevents potential false-positives.

Although.. a false-positive is unlikely anyway.

Update borgmatic 1.8.2 -> 1.8.3

Update mautrix-discord 0.6.2 -> 0.6.3

Update mautrix-gmessages 0.2.0 -> 0.2.1

Update prometheus 2.47.1 -> 2.47.2

Update mautrix-whatsapp 0.10.2 -> 0.10.3

migrate prometheus exporter roles

update grafana 10.1.4 -> 10.1.5