Merge pull request #927 from xmlking/renovate/alpine-3.x

fix(deps): update alpine docker tag to v3.15

Author: xmlking

.deploy/keycloak/helm/values.yaml

@@ -1,7 +1,7 @@
 init:
   image:
     repository: alpine
-    tag: 3.14
+    tag: 3.15
     pullPolicy: IfNotPresent
 
 clusterDomain: cluster.local