Merge remote-tracking branch 'upstream/develop' into aliases

.gitattributes

.gitignore

.gitlab-ci.yml

CHANGELOG.md

Dockerfile

SECURITY.md

benchmarks/load_testing/users.ex

benchmarks/mix/tasks/pleroma/benchmarks/timelines.ex

config/config.exs

config/description.exs

config/releases.exs

config/test.exs

docs/API/admin_api.md

docs/API/chats.md

docs/API/differences_in_mastoapi_responses.md

docs/API/pleroma_api.md

docs/API/prometheus.md

docs/administration/CLI_tasks/config.md

docs/administration/CLI_tasks/email.md

docs/administration/CLI_tasks/frontend.md