Updated assets
Updated assets

Signed-off-by: Marco Pracucci <3829486b93ec44395f0b980424bae9b6fb07b7bc@pracucci.com>

prometheus/alertmanager,GoogleCloudPlatform/alertmanager,GoogleCloudPlatform/alertmanager,prometheus/alertmanager,GoogleCloudPlatform/alertmanager,GoogleCloudPlatform/alertmanager,prometheus/alertmanager,prometheus/alertmanager