bump versions for 1.4.5 release

charts/kured/Chart.yaml

 apiVersion: v1
-appVersion: "1.4.4"
+appVersion: "1.4.5"
 description: A Helm chart for kured
 name: kured
-version: 2.1.0
+version: 2.1.1
 home: https://github.com/weaveworks/kured
 maintainers:
   - name: dholbach

charts/kured/values.yaml

 image:
   repository: weaveworks/kured
-  tag: 1.4.4
+  tag: 1.4.5
   pullPolicy: IfNotPresent
   pullSecrets: []