Merge tag '0.4.12' into develop

.github/workflows/release.yml

Cargo.lock

Cargo.toml

README.md

deploy/Dockerfile

deploy/alpine.Dockerfile

deploy/helm/Chart.yaml

deploy/helm/templates/servicemonitor.yaml

deploy/helm/values.yaml

docs/configuration.md

docs/hooks.md

docs/index.md

src/config.rs

src/notifiers/amqp_notifier.rs

src/notifiers/models/message_format.rs

src/notifiers/models/notification_manager.rs