Update Helm release redis to v16

Signed-off-by: Renovate Bot <bot@renovateapp.com>

Author: renovate-bot

appuio/snappass/requirements.yaml

@@ -1,5 +1,5 @@
 dependencies:
   - name: redis
-    version: 10.7.4
+    version: 16.9.2
     repository: https://charts.bitnami.com/bitnami
     condition: redis.enabled