Update ghcr.io/fluxcd/notification-controller Docker tag to v1.8.0

Author: renovate-bot

manifests/cluster/flux-system/gotk-components.yaml

@@ -13272,7 +13272,7 @@ spec:
                 resourceFieldRef:
                   containerName: manager
                   resource: limits.memory
-          image: ghcr.io/fluxcd/notification-controller:v1.6.0@sha256:80174ff676407af7a6feff67b0c2f100de9f7f89df4c26fc871e4d4c4006544d
+          image: ghcr.io/fluxcd/notification-controller:v1.8.0@sha256:f5f7e8023c01617f11e2533d3effb3c82ff73fb57d711b0e27ef9f15edca6cc3
           imagePullPolicy: IfNotPresent
           livenessProbe:
             httpGet: