chore(deps): update roundcubemail docker tag to v1.6.11

.drone.yml

@@ -17,7 +17,7 @@ steps:
 - name: helm lint
   commands:
   - helm lint
-  image: git.cryptic.systems/volker.raschek/helm:3.18.4
+  image: git.cryptic.systems/volker.raschek/helm:3.17.1
   resources:
     limits:
       cpu: 150
@@ -35,7 +35,7 @@ steps:
 - name: helm template
   commands:
   - helm template .
-  image: git.cryptic.systems/volker.raschek/helm:3.18.4
+  image: git.cryptic.systems/volker.raschek/helm:3.17.1
   resources:
     limits:
       cpu: 150
@@ -93,7 +93,7 @@ steps:
       from_secret: helm_repo_password
     HELM_REPO_USERNAME:
       from_secret: helm_repo_username
-  image: git.cryptic.systems/volker.raschek/helm:3.18.4
+  image: git.cryptic.systems/volker.raschek/helm:3.17.1
   resources:
     limits:
       cpu: 150

Chart.yaml

@@ -3,7 +3,7 @@ name: roundcube
 description: Helm chart for roundcube
 type: application
 version: "0.2.1"
-appVersion: "1.5.3-apache"
+appVersion: "1.6.11-apache"
 icon: https://upload.wikimedia.org/wikipedia/commons/e/e3/Roundcube_logo_icon.svg
 
 keywords: