[bot] [main] Automated version update (#2040)

Co-authored-by: Prometheus Operator Bot <prom-op-bot@users.noreply.github.com>

manifests/setup/0alertmanagerCustomResourceDefinition.yaml

@@ -1362,6 +1362,25 @@ spec:
                           they always include EndsAt.
                         pattern: ^(0|(([0-9]+)y)?(([0-9]+)w)?(([0-9]+)d)?(([0-9]+)h)?(([0-9]+)m)?(([0-9]+)s)?(([0-9]+)ms)?)$
                         type: string
+                      slackApiUrl:
+                        description: The default Slack API URL.
+                        properties:
+                          key:
+                            description: The key of the secret to select from.  Must
+                              be a valid secret key.
+                            type: string
+                          name:
+                            description: 'Name of the referent. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names
+                              TODO: Add other useful fields. apiVersion, kind, uid?'
+                            type: string
+                          optional:
+                            description: Specify whether the Secret or its key must
+                              be defined
+                            type: boolean
+                        required:
+                        - key
+                        type: object
+                        x-kubernetes-map-type: atomic
                     type: object
                   name:
                     description: The name of the AlertmanagerConfig resource which