Update rancher/mirrored-coredns-coredns Docker tag to v1.14.0 (#248)

Author: renovate[bot]

manifests/coredns/coredns.yaml

@@ -26,7 +26,7 @@ spec:
       - args:
         - -conf
         - /etc/coredns/Corefile
-        image: rancher/mirrored-coredns-coredns:1.13.2
+        image: rancher/mirrored-coredns-coredns:1.14.0
         imagePullPolicy: IfNotPresent
         livenessProbe:
           failureThreshold: 3