Increase version to 0.15.11 and update CHANGELOG

CHANGELOG.md

 # Changelog
 
-## [0.15.11] - Unreleased
+## [0.15.11] - 2023-03-01
 
 * Catch errors in setup-apps.sh to allow nextcloud to start regardless of them,
   and add a prometheus monitor and alert so that we may still be notified of
   any problems.
-* Update nextcloud helm chart to v3.5.0.
+* Update nextcloud helm chart to v3.5.1.
 * Update rabbitmq to v11.10.0.
 
 ## [0.15.10] - 2023-02-08

Chart.yaml

@@ -3,8 +3,8 @@ apiVersion: v2
 description: |
   A helm chart for installing NextCloud and setting up ONLYOFFICE integration
 name: nextcloud-onlyoffice
-appVersion: NC-25.0.3-OO-7.2.2.56
-version: 0.15.11-poststart-2
+appVersion: NC-25.0.4-OO-7.2.2.56
+version: 0.15.11
 icon: https://cdn.rawgit.com/docker-library/docs/defa5ffc7123177acd60ddef6e16bddf694cc35f/nextcloud/logo.svg
 dependencies:
   # https://artifacthub.io/packages/helm/nextcloud/nextcloud