Alertmanager 0.22.1 is available

[Julien Pivotto]

Hello everyone,

Alertmanager 0.22.1 has been released.

This release addresses a regression in the API v1 that was introduced in
0.22.0.

Matchers in silences created with the API v1 could be considered
negative matchers. This affects users using amtool prior to v0.17.0.

This release can be found in the usual locations:

- See the full changelog & grab the binaries:
https://github.com/prometheus/alertmanager/releases/tag/v0.22.1
- See https://quay.io/repository/prometheus/alertmanager?tab=tags and
https://hub.docker.com/r/prom/alertmanager/tags for container images.

--
Julien Pivotto
@roidelapluie