After noticing that this breaks the webUI completely, this patch
restores the webui API endpoints in order to allow anonymous users to
view toots and profile.

This patch upgrades Mastodon to the the current version. This should
allow to use newer features such as editing of toots.

This patch also implements the needed adjustments to the helm chart and
allows to keep the behaviour of authorized fetch.

This patch uses the absolute repository name, making sure that
multi-registry configs, like cri-o uses on Fedora won't try to pull
things from quay or other registries.

This patch reduces the default resource requests, helping to improve the
resilience in case a single node goes down. This way the remaining nodes
aren't overwhelmed by resource requests for CPU.