Update grafana/promtail Docker tag to v3

manifests/airtrail/airtrail.yaml

@@ -53,7 +53,7 @@ spec:
         fsGroup: 1000
       containers:
       - name: airtrail
-        image: johly/airtrail:v3.13.1
+        image: johly/airtrail:v3.13.0
         imagePullPolicy: IfNotPresent
         envFrom:
         - configMapRef:

manifests/monitoring/promtail.yaml

@@ -216,7 +216,7 @@ spec:
       serviceAccountName: promtail
       containers:
         - name: promtail
-          image: "grafana/promtail:3.6.11@sha256:a761cb834cfaeee29745440d4884d6748f0a08d8f68928db1d707018c1dcfbe9"
+          image: "grafana/promtail:3.6.11"
           imagePullPolicy: IfNotPresent
           args:
             - "-config.file=/etc/promtail/promtail.yaml"

renovate.json

@@ -8,8 +8,7 @@
   "rebaseWhen": "behind-base-branch",
   "extends": [
     "replacements:k8s-registry-move",
-    "local>averagemarcus/renovate-config//source-urls",
+    "local>averagemarcus/renovate-config//source-urls"
-    "docker:pinDigests"
   ],
   "ignorePaths": [
     "terraform"